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https://issues.apache.org/jira/browse/HIVE-13383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15440615#comment-15440615
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Thejas M Nair commented on HIVE-13383:
--------------------------------------
Example of the useless error -
{noformat}
2016-08-27 00:47:46,929 WARN [HiveServer2-HttpHandler-Pool: Thread-2813 - /]:
metastore.RetryingMetaStoreClient (RetryingMetaStoreClient.java:invoke(187)) -
MetaStoreClient lost connection. Attempting to reconnect.
MetaException(message:For direct MetaStore DB connections, we don't support
retries at the client level.)
at
org.apache.hadoop.hive.metastore.HiveMetaStoreClient.reconnect(HiveMetaStoreClient.java:321)
at
org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:151)
at com.sun.proxy.$Proxy14.listPartitionsWithAuthInfo(Unknown Source)
at org.apache.hadoop.hive.ql.metadata.Hive.getPartitions(Hive.java:2209)
at
org.apache.hadoop.hive.ql.exec.ArchiveUtils.conflictingArchiveNameOrNull(ArchiveUtils.java:304)
at
org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.validate(SemanticAnalyzer.java:10930)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:479)
at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:320)
at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1219)
at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1213)
at
org.apache.hive.service.cli.operation.SQLOperation.prepare(SQLOperation.java:146)
at
org.apache.hive.service.cli.operation.SQLOperation.runInternal(SQLOperation.java:226)
at
org.apache.hive.service.cli.operation.Operation.run(Operation.java:276)
at
org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementInternal(HiveSessionImpl.java:468)
at
org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementAsync(HiveSessionImpl.java:456)
at
org.apache.hive.service.cli.CLIService.executeStatementAsync(CLIService.java:298)
at
org.apache.hive.service.cli.thrift.ThriftCLIService.ExecuteStatement(ThriftCLIService.java:506)
at
org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1317)
at
org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1302)
at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
at org.apache.thrift.server.TServlet.doPost(TServlet.java:83)
at
org.apache.hive.service.cli.thrift.ThriftHttpServlet.doPost(ThriftHttpServlet.java:206)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:345)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:449)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:925)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
{noformat}
> RetryingMetaStoreClient retries non retriable embedded metastore client
> ------------------------------------------------------------------------
>
> Key: HIVE-13383
> URL: https://issues.apache.org/jira/browse/HIVE-13383
> Project: Hive
> Issue Type: Bug
> Reporter: Thejas M Nair
> Assignee: Thejas M Nair
> Attachments: HIVE-13383.1.patch
>
>
> Embedded metastore clients can't be retried, they throw an exception - "For
> direct MetaStore DB connections, we don't support retries at the client
> level."
> This tends to mask the real error that caused the attempts to retry.
> RetryingMetaStoreClient shouldn't even attempt to reconnect when
> direct/embedded metastore client is used.
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