[jira] [Commented] (SENTRY-1630) When HMSFollower exits in an abnormal way, encounter out of sequence error for the following connection.

["Vamsee Yarlagadda (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SENTRY-1630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15870705#comment-15870705 ] 

Vamsee Yarlagadda commented on SENTRY-1630:
-------------------------------------------

Is this something that could be going wrong on the Hive side? And sentry being the client hitting this problem?

> When HMSFollower exits in an abnormal way, encounter out of sequence error for the following connection.
> --------------------------------------------------------------------------------------------------------
>
>                 Key: SENTRY-1630
>                 URL: https://issues.apache.org/jira/browse/SENTRY-1630
>             Project: Sentry
>          Issue Type: Sub-task
>          Components: Hdfs Plugin
>    Affects Versions: sentry-ha-redesign
>            Reporter: Hao Hao
>             Fix For: sentry-ha-redesign
>
>
> When HMSFollower exits in an abnormal way, for all the following connection would encounter out of sequence and SocketTimeoutException: Read timed out. Looking at HIVE-6893, it seems to relate to leakage connection problem.
> {noformat}2017-02-15 19:03:42,822 ERROR org.apache.sentry.hdfs.FullUpdateInitializer: Task did not complete successfully after 0 tries. Exception got: org.apache.thrift.TApplicationException: get_database failed: out of sequence response
> 2017-02-15 19:03:42,827 ERROR org.apache.sentry.hdfs.FullUpdateInitializer: Task did not complete successfully after 0 tries. Exception got: MetaException(message:Got exception: org.apache.thrift.transport.TTransportException null)
> 2017-02-15 19:03:43,803 INFO hive.metastore: Closed a connection to metastore, current connections: 0
> 2017-02-15 19:03:43,803 ERROR org.apache.sentry.service.thrift.HMSFollower: Exception occurred persisting Hive full snapshot into DB
> java.lang.RuntimeException: org.apache.thrift.TApplicationException: get_database failed: out of sequence response
>         at org.apache.sentry.hdfs.FullUpdateInitializer.createInitialUpdate(FullUpdateInitializer.java:324)
>         at org.apache.sentry.service.thrift.HMSFollower.fetchFullUpdate(HMSFollower.java:343)
>         at org.apache.sentry.service.thrift.HMSFollower.run(HMSFollower.java:244)
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>         at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.thrift.TApplicationException: get_database failed: out of sequence response
>         at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:84)
>         at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_get_database(ThriftHiveMetastore.java:662)
>         at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.get_database(ThriftHiveMetastore.java:649)
>         at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.getDatabase(HiveMetaStoreClient.java:1213)
>         at org.apache.sentry.hdfs.FullUpdateInitializer$DbTask.doTask(FullUpdateInitializer.java:256)
>         at org.apache.sentry.hdfs.FullUpdateInitializer$BaseTask$RetryStrategy.exec(FullUpdateInitializer.java:110)
>         at org.apache.sentry.hdfs.FullUpdateInitializer$BaseTask.call(FullUpdateInitializer.java:150)
>         at org.apache.sentry.hdfs.FullUpdateInitializer$BaseTask.call(FullUpdateInitializer.java:79)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262)
>         ... 3 more
> 2017-02-15 19:03:43,849 INFO org.apache.sentry.service.thrift.HMSFollower: Making a kerberos connection to HMS{noformat}



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