You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@ratis.apache.org by "Ankit Singhal (Jira)" <ji...@apache.org> on 2019/09/05 01:44:00 UTC
[jira] [Updated] (RATIS-673) NPE exporting a log in LogStateMachine
[ https://issues.apache.org/jira/browse/RATIS-673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ankit Singhal updated RATIS-673:
--------------------------------
Attachment: (was: RATIS-673.patch)
> NPE exporting a log in LogStateMachine
> --------------------------------------
>
> Key: RATIS-673
> URL: https://issues.apache.org/jira/browse/RATIS-673
> Project: Ratis
> Issue Type: Bug
> Reporter: Josh Elser
> Assignee: Ankit Singhal
> Priority: Major
> Attachments: RATIS-673.patch
>
>
> {noformat}
> 2019-09-04 16:32:21,638 WARN server.LogStateMachine (LogStateMachine.java:processArchiveLog(686)) - Exception while processing archival request for LogName['testLogExport']
> java.lang.NullPointerException
> at org.apache.ratis.logservice.server.LogStateMachine.processArchiveLog(LogStateMachine.java:619)
> at org.apache.ratis.logservice.server.LogStateMachine.access$6(LogStateMachine.java:599)
> at org.apache.ratis.logservice.server.LogStateMachine$7.run(LogStateMachine.java:310)
> at org.apache.ratis.statemachine.impl.BaseStateMachine.recordTime(BaseStateMachine.java:210)
> at org.apache.ratis.logservice.server.LogStateMachine.query(LogStateMachine.java:308)
> at org.apache.ratis.server.impl.RaftServerImpl.submitClientRequestAsync(RaftServerImpl.java:553)
> at org.apache.ratis.server.impl.RaftServerProxy.lambda$submitClientRequestAsync$7(RaftServerProxy.java:333)
> at org.apache.ratis.server.impl.RaftServerProxy.lambda$null$5(RaftServerProxy.java:328)
> at org.apache.ratis.util.JavaUtils.callAsUnchecked(JavaUtils.java:109)
> at org.apache.ratis.server.impl.RaftServerProxy.lambda$submitRequest$6(RaftServerProxy.java:328)
> at java.util.concurrent.CompletableFuture.uniComposeStage(CompletableFuture.java:981)
> at java.util.concurrent.CompletableFuture.thenCompose(CompletableFuture.java:2124)
> at org.apache.ratis.server.impl.RaftServerProxy.submitRequest(RaftServerProxy.java:327)
> at org.apache.ratis.server.impl.RaftServerProxy.submitClientRequestAsync(RaftServerProxy.java:333)
> at org.apache.ratis.grpc.client.GrpcClientProtocolService$RequestStreamObserver.processClientRequest(GrpcClientProtocolService.java:220)
> at org.apache.ratis.grpc.client.GrpcClientProtocolService$UnorderedRequestStreamObserver.processClientRequest(GrpcClientProtocolService.java:276)
> at org.apache.ratis.grpc.client.GrpcClientProtocolService$RequestStreamObserver.onNext(GrpcClientProtocolService.java:240)
> at org.apache.ratis.grpc.client.GrpcClientProtocolService$RequestStreamObserver.onNext(GrpcClientProtocolService.java:168)
> at org.apache.ratis.thirdparty.io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onMessage(ServerCalls.java:248)
> at org.apache.ratis.thirdparty.io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:263)
> at org.apache.ratis.thirdparty.io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:686)
> at org.apache.ratis.thirdparty.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
> at org.apache.ratis.thirdparty.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748) {noformat}
> Saw this in {{TestMetaServer-output.txt}}.
> Problem seems to beĀ [https://github.com/apache/incubator-ratis/blob/c2a6a24a9ff85cc24132f5d5db40391bd36fbe70/ratis-logservice/src/main/java/org/apache/ratis/logservice/server/LogStateMachine.java#L612-L613]
> The {{putIfAbsent}} call would return {{null}}. Interestingly, the test cases still pass somehow :)
> FYI [~ankit.singhal]
--
This message was sent by Atlassian Jira
(v8.3.2#803003)