hive表向es集群同步数据20230830

背景：实际开发中遇到一个需求，就是需要将hive表中的数据同步到es集群中，之前没有做过，查看一些帖子，发现有一种方案挺不错的，记录一下。

我的电脑环境如下

软件名称	版本
Hadoop	3.3.0
hive	3.1.3
jdk	1.8
Elasticsearch	7.10.2
kibana	7.10.2
logstash	7.10.2
ES-Hadoop	7.10.2

ES-Hadoop的引入

hadoop、hive和es的关系如下图，中间有一个组件叫做ES-Hadoop，是连接Hadoop和es的桥梁，es的官网上提供了这个组件，解决Hadoop和es之间的数据同步问题。

下面说一下数据同步的具体步骤

第一步：去es的官网上下载ES-Hadoop组件

注意：ES-Hadoop 的版本需要和es的版本是一致的

官网下载地址：es的官网链接-点我

在输入框中输入es-hadoop，在version版本处找到和你es相同的版本即可

第二步：上传这个安装包到集群上，解压完成后将其中的jar包上传到HDFS上你新建的目录

命令如下；

hadoop fs -put elasticsearch-hadoop-7.10.2.jar /user/hive/warehouse/es_hadoop/

第三步：将这个jar包添加到hive中

在hive的终端下输入如下命令

add jar hdfs:///user/hive/warehouse/es_hadoop/elasticsearch-hadoop-7.10.2.jar;

第四步：在hive中创建临时表，作为测试用

创建一个hive中的表，并且添加上测试数据

CREATE EXTERNAL TABLE `hive_test`(
  `name` string, 
  `age` int, 
  `hight` int)
ROW FORMAT SERDE 
  'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe' 
WITH SERDEPROPERTIES ( 
  'field.delim'=',', 
  'serialization.format'=',') 
STORED AS INPUTFORMAT 
  'org.apache.hadoop.mapred.TextInputFormat' 
OUTPUTFORMAT 
  'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
LOCATION
  'hdfs://master:9000/user/hive/warehouse/pdata_dynamic.db/hive_test';
添加数据，展示如下
hive> select * from hive_test;
OK
吴占喜  30      175
令狐冲  50      180
任我行  60      160

第五步：创建hive到es的映射表

CREATE EXTERNAL TABLE `es_hadoop_cluster`(
  `name` string COMMENT 'from deserializer',
  `age` string COMMENT 'from deserializer',
  `hight` string COMMENT 'from deserializer')
ROW FORMAT SERDE
  'org.elasticsearch.hadoop.hive.EsSerDe'
STORED BY
  'org.elasticsearch.hadoop.hive.EsStorageHandler'
WITH SERDEPROPERTIES (
  'serialization.format'='1')
LOCATION
  'hdfs://master:9000/user/hive/warehouse/pdata_dynamic.db/es_hadoop_cluster'
TBLPROPERTIES (
  'bucketing_version'='2',
  'es.batch.write.retry.count'='6',
  'es.batch.write.retry.wait'='60s',
  'es.index.auto.create'='TRUE',
  'es.index.number_of_replicas'='0',
  'es.index.refresh_interval'='-1',
  'es.mapping.name'='name:name,age:age,hight:hight',
  'es.nodes'='172.16.27.133:9200',
  'es.nodes.wan.only'='TRUE',
  'es.resource'='hive_to_es/_doc');

映射表的参数说明

参数	参数	参数说明
bucketing_version	2
es.batch.write.retry.count	6
es.batch.write.retry.wait	60s
es.index.auto.create	TRUE	通过Hadoop组件向Elasticsearch集群写入数据，是否自动创建不存在的index： true：自动创建 ； false：不会自动创建
es.index.number_of_replicas	0
es.index.refresh_interval	-1
es.mapping.name	7.10.2	hive和es集群字段映射
es.nodes		指定Elasticsearch实例的访问地址，建议使用内网地址。
es.nodes.wan.only	TRUE	开启Elasticsearch集群在云上使用虚拟IP进行连接，是否进行节点嗅探： true：设置 ；false：不设置
es.resource	7.10.2	es集群中索引名称
es.nodes.discovery	TRUE	是否禁用节点发现：true：禁用 ；false：不禁用
es.input.use.sliced.partitions	TRUE	是否使用slice分区： true：使用。设置为true，可能会导致索引在预读阶段的时间明显变长，有时会远远超出查询数据所耗费的时间。建议设置为false，以提高查询效率； false：不使用。
es.read.metadata	FALSE	操作Elasticsearch字段涉及到_id之类的内部字段，请开启此属性。

第六步：写同步SQL测试一下

同步SQL

insert into es_hadoop_cluster select * from hive_test;

结果报错了，nice，正好演示一下这个错误怎么解决

报错信息中有一行：Caused by: java.lang.ClassNotFoundException: org.elasticsearch.hadoop.hive.EsHiveInputFormat

报错原因：在hive中执行add jar xxx 这个命令，只在当前窗口下有效

解决方案：1.每次执行insert into的时候，执行下面的添加jar包的命令

add jar hdfs:///user/hive/warehouse/es_hadoop/elasticsearch-hadoop-7.10.2.jar;

2.将这个jar包作为永久的函数加载进来（后面在补充再补充一下）

Query ID = root_20230830041146_d125a01c-4174-48a5-8b9c-a15b41d27403
Total jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
Starting Job = job_1693326922484_0004, Tracking URL = http://master:8088/proxy/application_1693326922484_0004/
Kill Command = /root/soft/hadoop/hadoop-3.3.0//bin/mapred job  -kill job_1693326922484_0004
Hadoop job information for Stage-2: number of mappers: 1; number of reducers: 0
2023-08-30 04:11:51,842 Stage-2 map = 0%,  reduce = 0%
2023-08-30 04:12:45,532 Stage-2 map = 100%,  reduce = 0%
Ended Job = job_1693326922484_0004 with errors
0    [582efbca-df6e-4f87-b4a4-5a5f03667fd9 main] ERROR org.apache.hadoop.hive.ql.exec.Task  - Ended Job = job_1693326922484_0004 with errors
Error during job, obtaining debugging information...
1    [Thread-33] ERROR org.apache.hadoop.hive.ql.exec.Task  - Error during job, obtaining debugging information...
Examining task ID: task_1693326922484_0004_m_000000 (and more) from job job_1693326922484_0004
3    [Thread-34] ERROR org.apache.hadoop.hive.ql.exec.Task  - Examining task ID: task_1693326922484_0004_m_000000 (and more) from job job_1693326922484_0004

Task with the most failures(4): 
-----
Task ID:
  task_1693326922484_0004_m_000000

URL:
  http://master:8088/taskdetails.jsp?jobid=job_1693326922484_0004&tipid=task_1693326922484_0004_m_000000
-----
Diagnostic Messages for this Task:
Error: java.lang.RuntimeException: Failed to load plan: hdfs://master:9000/tmp/hive/root/582efbca-df6e-4f87-b4a4-5a5f03667fd9/hive_2023-08-30_04-11-47_010_5312656494742717839-1/-mr-10002/ae1cf98b-a157-4266-92b3-7d618b411f00/map.xml
        at org.apache.hadoop.hive.ql.exec.Utilities.getBaseWork(Utilities.java:502)
        at org.apache.hadoop.hive.ql.exec.Utilities.getMapWork(Utilities.java:335)
        at org.apache.hadoop.hive.ql.io.HiveInputFormat.init(HiveInputFormat.java:435)
        at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushProjectionsAndFilters(HiveInputFormat.java:881)
        at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushProjectionsAndFilters(HiveInputFormat.java:874)
        at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getRecordReader(CombineHiveInputFormat.java:716)
        at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.<init>(MapTask.java:175)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:444)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:178)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1845)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:172)
Caused by: org.apache.hive.com.esotericsoftware.kryo.KryoException: Unable to find class: org.elasticsearch.hadoop.hive.EsHiveInputFormat
Serialization trace:
inputFileFormatClass (org.apache.hadoop.hive.ql.plan.TableDesc)
tableInfo (org.apache.hadoop.hive.ql.plan.FileSinkDesc)
conf (org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator)
childOperators (org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator)
childOperators (org.apache.hadoop.hive.ql.exec.TableScanOperator)
aliasToWork (org.apache.hadoop.hive.ql.plan.MapWork)
        at org.apache.hive.com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:156)
        at org.apache.hive.com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:133)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:670)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClass(SerializationUtilities.java:185)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.DefaultSerializers$ClassSerializer.read(DefaultSerializers.java:326)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.DefaultSerializers$ClassSerializer.read(DefaultSerializers.java:314)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObjectOrNull(Kryo.java:759)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObjectOrNull(SerializationUtilities.java:203)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:132)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:790)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClassAndObject(SerializationUtilities.java:180)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:790)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClassAndObject(SerializationUtilities.java:180)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:790)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClassAndObject(SerializationUtilities.java:180)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:161)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:39)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:686)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:210)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities.deserializeObjectByKryo(SerializationUtilities.java:729)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities.deserializePlan(SerializationUtilities.java:613)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities.deserializePlan(SerializationUtilities.java:590)
        at org.apache.hadoop.hive.ql.exec.Utilities.getBaseWork(Utilities.java:463)
        ... 13 more
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.hadoop.hive.EsHiveInputFormat
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.apache.hive.com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:154)
        ... 60 more


98   [Thread-33] ERROR org.apache.hadoop.hive.ql.exec.Task  - 
Task with the most failures(4): 
-----
Task ID:
  task_1693326922484_0004_m_000000

URL:
  http://master:8088/taskdetails.jsp?jobid=job_1693326922484_0004&tipid=task_1693326922484_0004_m_000000
-----
Diagnostic Messages for this Task:
Error: java.lang.RuntimeException: Failed to load plan: hdfs://master:9000/tmp/hive/root/582efbca-df6e-4f87-b4a4-5a5f03667fd9/hive_2023-08-30_04-11-47_010_5312656494742717839-1/-mr-10002/ae1cf98b-a157-4266-92b3-7d618b411f00/map.xml
        at org.apache.hadoop.hive.ql.exec.Utilities.getBaseWork(Utilities.java:502)
        at org.apache.hadoop.hive.ql.exec.Utilities.getMapWork(Utilities.java:335)
        at org.apache.hadoop.hive.ql.io.HiveInputFormat.init(HiveInputFormat.java:435)
        at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushProjectionsAndFilters(HiveInputFormat.java:881)
        at org.apache.hadoop.hive.ql.io.HiveInputFormat.pushProjectionsAndFilters(HiveInputFormat.java:874)
        at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getRecordReader(CombineHiveInputFormat.java:716)
        at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.<init>(MapTask.java:175)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:444)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:178)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1845)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:172)
Caused by: org.apache.hive.com.esotericsoftware.kryo.KryoException: Unable to find class: org.elasticsearch.hadoop.hive.EsHiveInputFormat
Serialization trace:
inputFileFormatClass (org.apache.hadoop.hive.ql.plan.TableDesc)
tableInfo (org.apache.hadoop.hive.ql.plan.FileSinkDesc)
conf (org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator)
childOperators (org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator)
childOperators (org.apache.hadoop.hive.ql.exec.TableScanOperator)
aliasToWork (org.apache.hadoop.hive.ql.plan.MapWork)
        at org.apache.hive.com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:156)
        at org.apache.hive.com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:133)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:670)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClass(SerializationUtilities.java:185)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.DefaultSerializers$ClassSerializer.read(DefaultSerializers.java:326)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.DefaultSerializers$ClassSerializer.read(DefaultSerializers.java:314)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObjectOrNull(Kryo.java:759)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObjectOrNull(SerializationUtilities.java:203)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:132)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:790)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClassAndObject(SerializationUtilities.java:180)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:790)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClassAndObject(SerializationUtilities.java:180)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:134)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:40)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:790)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readClassAndObject(SerializationUtilities.java:180)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:161)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:39)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:708)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:218)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
        at org.apache.hive.com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:551)
        at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:686)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities$KryoWithHooks.readObject(SerializationUtilities.java:210)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities.deserializeObjectByKryo(SerializationUtilities.java:729)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities.deserializePlan(SerializationUtilities.java:613)
        at org.apache.hadoop.hive.ql.exec.SerializationUtilities.deserializePlan(SerializationUtilities.java:590)
        at org.apache.hadoop.hive.ql.exec.Utilities.getBaseWork(Utilities.java:463)
        ... 13 more
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.hadoop.hive.EsHiveInputFormat
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.apache.hive.com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:154)
        ... 60 more


FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
106  [582efbca-df6e-4f87-b4a4-5a5f03667fd9 main] ERROR org.apache.hadoop.hive.ql.Driver  - FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
MapReduce Jobs Launched: 
Stage-Stage-2: Map: 1   HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec

将jar包添加进来又报错了，very nice,正好在演示一下这个错误，😄

报错如下所示

报错原因分析：仔细看这行Error: java.lang.ClassNotFoundException: org.apache.commons.httpclient.HttpConnectionManager，原因是缺少httpclient.的jar包导致的

解决方案：将httpclient.的jar包像上面的es-hadoop的jar包一样导入即可

hive> insert into es_hadoop_cluster select * from hive_test;
Query ID = root_20230830041906_20c85a80-072a-4023-b5ab-8b532e5db092
Total jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
Starting Job = job_1693326922484_0005, Tracking URL = http://master:8088/proxy/application_1693326922484_0005/
Kill Command = /root/soft/hadoop/hadoop-3.3.0//bin/mapred job  -kill job_1693326922484_0005
Hadoop job information for Stage-2: number of mappers: 1; number of reducers: 0
2023-08-30 04:19:15,561 Stage-2 map = 0%,  reduce = 0%
2023-08-30 04:19:34,095 Stage-2 map = 100%,  reduce = 0%
Ended Job = job_1693326922484_0005 with errors
408543 [582efbca-df6e-4f87-b4a4-5a5f03667fd9 main] ERROR org.apache.hadoop.hive.ql.exec.Task  - Ended Job = job_1693326922484_0005 with errors
Error during job, obtaining debugging information...
408543 [Thread-57] ERROR org.apache.hadoop.hive.ql.exec.Task  - Error during job, obtaining debugging information...
Examining task ID: task_1693326922484_0005_m_000000 (and more) from job job_1693326922484_0005
408547 [Thread-58] ERROR org.apache.hadoop.hive.ql.exec.Task  - Examining task ID: task_1693326922484_0005_m_000000 (and more) from job job_1693326922484_0005

Task with the most failures(4): 
-----
Task ID:
  task_1693326922484_0005_m_000000

URL:
  http://master:8088/taskdetails.jsp?jobid=job_1693326922484_0005&tipid=task_1693326922484_0005_m_000000
-----
Diagnostic Messages for this Task:
Error: java.lang.ClassNotFoundException: org.apache.commons.httpclient.HttpConnectionManager
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at org.elasticsearch.hadoop.rest.commonshttp.CommonsHttpTransportFactory.create(CommonsHttpTransportFactory.java:40)
        at org.elasticsearch.hadoop.rest.NetworkClient.selectNextNode(NetworkClient.java:99)
        at org.elasticsearch.hadoop.rest.NetworkClient.<init>(NetworkClient.java:82)
        at org.elasticsearch.hadoop.rest.NetworkClient.<init>(NetworkClient.java:58)
        at org.elasticsearch.hadoop.rest.RestClient.<init>(RestClient.java:101)
        at org.elasticsearch.hadoop.rest.RestService.createWriter(RestService.java:620)
        at org.elasticsearch.hadoop.mr.EsOutputFormat$EsRecordWriter.init(EsOutputFormat.java:175)
        at org.elasticsearch.hadoop.hive.EsHiveOutputFormat$EsHiveRecordWriter.write(EsHiveOutputFormat.java:59)
        at org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:987)
        at org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator.process(VectorFileSinkOperator.java:111)
        at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:966)
        at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:939)
        at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:158)
        at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:966)
        at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:939)
        at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:125)
        at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.closeOp(VectorMapOperator.java:990)
        at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:733)
        at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:193)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61)
        at org.apache.hadoop.hive.ql.exec.mr.ExecMapRunner.run(ExecMapRunner.java:37)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:465)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:178)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1845)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:172)


408555 [Thread-57] ERROR org.apache.hadoop.hive.ql.exec.Task  - 
Task with the most failures(4): 
-----
Task ID:
  task_1693326922484_0005_m_000000

URL:
  http://master:8088/taskdetails.jsp?jobid=job_1693326922484_0005&tipid=task_1693326922484_0005_m_000000
-----
Diagnostic Messages for this Task:
Error: java.lang.ClassNotFoundException: org.apache.commons.httpclient.HttpConnectionManager
        at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at org.elasticsearch.hadoop.rest.commonshttp.CommonsHttpTransportFactory.create(CommonsHttpTransportFactory.java:40)
        at org.elasticsearch.hadoop.rest.NetworkClient.selectNextNode(NetworkClient.java:99)
        at org.elasticsearch.hadoop.rest.NetworkClient.<init>(NetworkClient.java:82)
        at org.elasticsearch.hadoop.rest.NetworkClient.<init>(NetworkClient.java:58)
        at org.elasticsearch.hadoop.rest.RestClient.<init>(RestClient.java:101)
        at org.elasticsearch.hadoop.rest.RestService.createWriter(RestService.java:620)
        at org.elasticsearch.hadoop.mr.EsOutputFormat$EsRecordWriter.init(EsOutputFormat.java:175)
        at org.elasticsearch.hadoop.hive.EsHiveOutputFormat$EsHiveRecordWriter.write(EsHiveOutputFormat.java:59)
        at org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:987)
        at org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator.process(VectorFileSinkOperator.java:111)
        at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:966)
        at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:939)
        at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:158)
        at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:966)
        at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:939)
        at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:125)
        at org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.closeOp(VectorMapOperator.java:990)
        at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:733)
        at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.close(ExecMapper.java:193)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61)
        at org.apache.hadoop.hive.ql.exec.mr.ExecMapRunner.run(ExecMapRunner.java:37)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:465)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:178)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1845)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:172)


FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
408563 [582efbca-df6e-4f87-b4a4-5a5f03667fd9 main] ERROR org.apache.hadoop.hive.ql.Driver  - FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
MapReduce Jobs Launched: 
Stage-Stage-2: Map: 1   HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec

在hive的终端下，添加上httpclient的jar包，然后重新执行insert语句

命令如下；

add jar hdfs:///user/hive/warehouse/es_hadoop/commons-httpclient-3.1.jar;

执行成功喽，😄

hive> insert into es_hadoop_cluster select * from hive_test;
Query ID = root_20230830043006_1cf3a042-e5e4-4bec-8cee-49e670ac9b49
Total jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
Starting Job = job_1693326922484_0006, Tracking URL = http://master:8088/proxy/application_1693326922484_0006/
Kill Command = /root/soft/hadoop/hadoop-3.3.0//bin/mapred job  -kill job_1693326922484_0006
Hadoop job information for Stage-2: number of mappers: 1; number of reducers: 0
2023-08-30 04:30:17,504 Stage-2 map = 0%,  reduce = 0%
2023-08-30 04:30:21,633 Stage-2 map = 100%,  reduce = 0%, Cumulative CPU 0.79 sec
MapReduce Total cumulative CPU time: 790 msec
Ended Job = job_1693326922484_0006
MapReduce Jobs Launched: 
Stage-Stage-2: Map: 1   Cumulative CPU: 0.79 sec   HDFS Read: 6234 HDFS Write: 0 SUCCESS
Total MapReduce CPU Time Spent: 790 msec
OK
Time taken: 16.482 seconds

第七步：查询一下映射表，并去es集群上查询数据是否同步成功了

1.查询映射表

nice,又报错了，报错如下；

报错原因分析：我之前做的时候，将解压的所有包都放在hive的lib目录下了，现在看来，只需要一个即可，将其余的都删除

解决方案：删除多余的jar包在hive的lib的目录下

hive> select * from es_hadoop_cluster;
OK
Exception in thread "main" java.lang.ExceptionInInitializerError
        at org.elasticsearch.hadoop.rest.RestService.findPartitions(RestService.java:216)
        at org.elasticsearch.hadoop.mr.EsInputFormat.getSplits(EsInputFormat.java:414)
        at org.elasticsearch.hadoop.hive.EsHiveInputFormat.getSplits(EsHiveInputFormat.java:115)
        at org.elasticsearch.hadoop.hive.EsHiveInputFormat.getSplits(EsHiveInputFormat.java:51)
        at org.apache.hadoop.hive.ql.exec.FetchOperator.generateWrappedSplits(FetchOperator.java:425)
        at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextSplits(FetchOperator.java:395)
        at org.apache.hadoop.hive.ql.exec.FetchOperator.getRecordReader(FetchOperator.java:314)
        at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:540)
        at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:509)
        at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:146)
        at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:2691)
        at org.apache.hadoop.hive.ql.reexec.ReExecDriver.getResults(ReExecDriver.java:229)
        at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:259)
        at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:188)
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:402)
        at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:821)
        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759)
        at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:683)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:323)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:236)
Caused by: java.lang.RuntimeException: Multiple ES-Hadoop versions detected in the classpath; please use only one
jar:file:/root/soft/hive/apache-hive-3.1.3-bin/lib/elasticsearch-hadoop-7.17.6.jar
jar:file:/root/soft/hive/apache-hive-3.1.3-bin/lib/elasticsearch-hadoop-hive-7.17.6.jar
jar:file:/root/soft/hive/apache-hive-3.1.3-bin/lib/elasticsearch-hadoop-mr-7.17.6.jar
jar:file:/root/soft/hive/apache-hive-3.1.3-bin/lib/elasticsearch-hadoop-pig-7.17.6.jar
jar:file:/root/soft/hive/apache-hive-3.1.3-bin/lib/elasticsearch-spark-20_2.11-7.17.6.jar
jar:file:/root/soft/hive/apache-hive-3.1.3-bin/lib/elasticsearch-storm-7.17.6.jar

删除掉多余的jar包，然后在执行一次insert 语句，再进行查询，显示如下，在hive中查询是没有问题了

hive> select * from es_hadoop_cluster ;
OK
吴占喜  30      175
令狐冲  50      180
任我行  60      160
吴占喜  30      175
令狐冲  50      180
任我行  60      160

2.在es集群上去进行查询

根据映射表中创建时的索引，进行查询，数据正常展示出来了，nice

开心，😄，有问题欢迎留言交流