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https://issues.apache.org/jira/browse/HIVE-19316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16454296#comment-16454296
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Rui Li commented on HIVE-19316:
-------------------------------
The issue only happens with remote HMS. We're expecting
LongColumnStatsDataInspector in LongColumnStatsMerger, but only
LongColumnStatsData is defined in {{hive_metastore.thrift}}. Not sure if that
could be the cause.
> StatsTask fails due to ClassCastException
> -----------------------------------------
>
> Key: HIVE-19316
> URL: https://issues.apache.org/jira/browse/HIVE-19316
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Reporter: Rui Li
> Priority: Major
>
> The stack trace:
> {noformat}
> 2018-04-26T20:17:37,674 ERROR [pool-7-thread-11]
> metastore.RetryingHMSHandler: java.lang.ClassCastException:
> org.apache.hadoop.hive.metastore.api.LongColumnStatsData cannot be cast to
> org.apache.hadoop.hive.metastore.columnstats.cache.LongColumnStatsDataInspector
> at
> org.apache.hadoop.hive.metastore.columnstats.merge.LongColumnStatsMerger.merge(LongColumnStatsMerger.java:30)
> at
> org.apache.hadoop.hive.metastore.utils.MetaStoreUtils.mergeColStats(MetaStoreUtils.java:1052)
> at
> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.set_aggr_stats_for(HiveMetaStore.java:7202)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.hadoop.hive.metastore.RetryingHMSHandler.invokeInternal(RetryingHMSHandler.java:147)
> at
> org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:108)
> at com.sun.proxy.$Proxy26.set_aggr_stats_for(Unknown Source)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$set_aggr_stats_for.getResult(ThriftHiveMetastore.java:16795)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$set_aggr_stats_for.getResult(ThriftHiveMetastore.java:16779)
> at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
> at
> org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:111)
> at
> org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:107)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
> at
> org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:119)
> at
> org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:286)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
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