环境信息
hadoop 3.1.0
hive-3.1.3
tez 0.9.1
问题描述
可以从hadoop命令行正确地访问s3a uri。我可以创建外部表和如下命令：
create external table mytable(a string, b string) location 's3a://mybucket/myfolder/';
select * from mytable limit 20;执行正确，但是
select count(*) from mytable;失败日志：
INFO : Compiling command(queryId=root_20230919030746_7b38e3c8-8429-4d45-8a01-343bd26d8f6e): select count(*) from lyb0
INFO : Concurrency mode is disabled, not creating a lock manager
INFO : Semantic Analysis Completed (retrial = false)
INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:_c0, type:bigint, comment:null)], properties:null)
INFO : Completed compiling command(queryId=root_20230919030746_7b38e3c8-8429-4d45-8a01-343bd26d8f6e); Time taken: 0.257 seconds
INFO : Concurrency mode is disabled, not creating a lock manager
INFO : Executing command(queryId=root_20230919030746_7b38e3c8-8429-4d45-8a01-343bd26d8f6e): select count(*) from lyb0
INFO : Query ID = root_20230919030746_7b38e3c8-8429-4d45-8a01-343bd26d8f6e
INFO : Total jobs = 1
INFO : Launching Job 1 out of 1
INFO : Starting task [Stage-1:MAPRED] in serial mode
INFO : Subscribed to counters: [] for queryId: root_20230919030746_7b38e3c8-8429-4d45-8a01-343bd26d8f6e
INFO : Session is already open
INFO : Dag name: select count(*) from lyb0 (Stage-1)
INFO : Status: Running (Executing on YARN cluster with App id application_1695092793092_0001)
----------------------------------------------------------------------------------------------
VERTICES MODE STATUS TOTAL COMPLETED RUNNING PENDING FAILED KILLED
----------------------------------------------------------------------------------------------
Map 1 container INITIALIZING -1 0 0 -1 0 0
Reducer 2 container INITED 1 0 0 1 0 0
----------------------------------------------------------------------------------------------
VERTICES: 00/02 [>>--------------------------] 0% ELAPSED TIME: 9.55 s
----------------------------------------------------------------------------------------------
ERROR : Status: Failed
ERROR : Vertex failed, vertexName=Map 1, vertexId=vertex_1695092793092_0001_3_00, diagnostics=[Vertex vertex_1695092793092_0001_3_00 [Map 1] killed/failed due to:ROOT_INPUT_INIT_FAILURE, Vertex Input: lyb0 initializer failed, vertex=vertex_1695092793092_0001_3_00 [Map 1], org.apache.hadoop.fs.s3a.AWSClientIOException: doesBucketExist on hivesql: com.amazonaws.AmazonClientException: No AWS Credentials provided by SimpleAWSCredentialsProvider : org.apache.hadoop.fs.s3a.CredentialInitializationException: Access key or secret key is unset: No AWS Credentials provided by SimpleAWSCredentialsProvider : org.apache.hadoop.fs.s3a.CredentialInitializationException: Access key or secret key is unset
at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:177)
......
at java.lang.Thread.run(Thread.java:750)
Caused by: com.amazonaws.AmazonClientException: No AWS Credentials provided by SimpleAWSCredentialsProvider : org.apache.hadoop.fs.s3a.CredentialInitializationException: Access key or secret key is unset
at org.apache.hadoop.fs.s3a.AWSCredentialProviderList.getCredentials(AWSCredentialProviderList.java:139)
......
at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:109)
... 31 more
Caused by: org.apache.hadoop.fs.s3a.CredentialInitializationException: Access key or secret key is unset
at org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider.getCredentials(SimpleAWSCredentialsProvider.java:75)
at org.apache.hadoop.fs.s3a.AWSCredentialProviderList.getCredentials(AWSCredentialProviderList.java:117)
... 45 more
]
ERROR : Vertex killed, vertexName=Reducer 2, vertexId=vertex_1695092793092_0001_3_01, diagnostics=[Vertex received Kill in INITED state., Vertex vertex_1695092793092_0001_3_01 [Reducer 2] killed/failed due to:OTHER_VERTEX_FAILURE]
ERROR : DAG did not succeed due to VERTEX_FAILURE. failedVertices:1 killedVertices:1
ERROR : FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.tez.TezTask. Vertex failed, vertexName=Map 1, vertexId=vertex_1695092793092_0001_3_00, diagnostics=[Vertex vertex_1695092793092_0001_3_00 [Map 1] killed/failed due to:ROOT_INPUT_INIT_FAILURE, Vertex Input: lyb0 initializer failed, vertex=vertex_1695092793092_0001_3_00 [Map 1], org.apache.hadoop.fs.s3a.AWSClientIOException: doesBucketExist on hivesql: com.amazonaws.AmazonClientException: No AWS Credentials provided by SimpleAWSCredentialsProvider : org.apache.hadoop.fs.s3a.CredentialInitializationException: Access key or secret key is unset: No AWS Credentials provided by SimpleAWSCredentialsProvider : org.apache.hadoop.fs.s3a.CredentialInitializationException: Access key or secret key is unset
at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:177)
......尝试将core-site.xml中的所有fs.s3a属性添加到tez-site.xml中，并在配置单元会话内设置fs，s3 a，access. key和fs.s3a.secret.key=，但仍出现相同错误。
解决方法
确保未在tez-site.xml中设置tez.use.cluster.hadoop-libs，或者如果设置了，则值应为false
但是当设置为false时，tez无法运行。
当设置为true时，得到了aws凭据错误，即使在每个可能的位置或环境变量中设置了它们。
最终通过将这个属性添加到hive-site.xml中使它工作起来
<property>
<name>hive.conf.hidden.list</name>
<value>javax.jdo.option.ConnectionPassword,hive.server2.keystore.password,fs.s3a.proxy.password,dfs.adls.oauth2.credential,fs.adl.oauth2.credential</value>
</property>这是正确的解决方案。但是，只是让你知道，现在你暴露了S3密钥密码在各种日志文件。一些文件，知道如下;
Hive-〉<HIVE_HOME>/logs/<user>/webhcat/webhcat.log.<date>
Hadoop -〉1个内存6个内存1个
如果您有权访问源代码，则可以修改此方法，使其不在配置单元日志中生成上述属性。
参考资料：