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Posted to issues@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2015/09/23 19:42:04 UTC
[jira] [Commented] (HIVE-11935) Access
HiveMetaStoreClient.currentMetaVars should be synchronized
[ https://issues.apache.org/jira/browse/HIVE-11935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904886#comment-14904886 ]
Xuefu Zhang commented on HIVE-11935:
------------------------------------
Can we update with the affected versions for this problem?
> Access HiveMetaStoreClient.currentMetaVars should be synchronized
> -----------------------------------------------------------------
>
> Key: HIVE-11935
> URL: https://issues.apache.org/jira/browse/HIVE-11935
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 1.3.0, 2.0.0
>
> Attachments: HIVE-11935.1.patch
>
>
> We saw intermittent failure of the following stack:
> {code}
> java.lang.NullPointerException
> at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.isCompatibleWith(HiveMetaStoreClient.java:287)
> at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:156)
> at com.sun.proxy.$Proxy9.isCompatibleWith(Unknown Source)
> at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:206)
> at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.createHiveDB(BaseSemanticAnalyzer.java:205)
> at org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer.<init>(DDLSemanticAnalyzer.java:223)
> at org.apache.hadoop.hive.ql.parse.SemanticAnalyzerFactory.get(SemanticAnalyzerFactory.java:259)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:409)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:308)
> at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1122)
> at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1116)
> at org.apache.hive.service.cli.operation.SQLOperation.prepare(SQLOperation.java:110)
> at org.apache.hive.service.cli.operation.SQLOperation.runInternal(SQLOperation.java:181)
> at org.apache.hive.service.cli.operation.Operation.run(Operation.java:257)
> at org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementInternal(HiveSessionImpl.java:388)
> at org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementAsync(HiveSessionImpl.java:375)
> at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at org.apache.hive.service.cli.session.HiveSessionProxy.invoke(HiveSessionProxy.java:78)
> at org.apache.hive.service.cli.session.HiveSessionProxy.access$000(HiveSessionProxy.java:36)
> at org.apache.hive.service.cli.session.HiveSessionProxy$1.run(HiveSessionProxy.java:63)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> at org.apache.hive.service.cli.session.HiveSessionProxy.invoke(HiveSessionProxy.java:59)
> at com.sun.proxy.$Proxy20.executeStatementAsync(Unknown Source)
> at org.apache.hive.service.cli.CLIService.executeStatementAsync(CLIService.java:274)
> at org.apache.hive.service.cli.thrift.ThriftCLIService.ExecuteStatement(ThriftCLIService.java:486)
> at org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1313)
> at org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1298)
> at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
> at org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1298)
> 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:171)
> 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:349)
> 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)
> {code}
> HiveMetaStoreClient.isCompatibleWith does a null check of currentMetaVars in the beginning, but it is possible HiveMetaStoreClient.close is invoked before it gets used, thus we will see the above stack. Access of currentMetaVars should be synchronized.
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