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From "Nicolas Liochon (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8380) NPE in HBaseClient$Connection.readResponse
Date Mon, 22 Apr 2013 13:01:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nicolas Liochon updated HBASE-8380:
-----------------------------------

    Status: Patch Available  (was: Open)
    
> NPE in HBaseClient$Connection.readResponse
> ------------------------------------------
>
>                 Key: HBASE-8380
>                 URL: https://issues.apache.org/jira/browse/HBASE-8380
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 0.95.0
>         Environment: aws, real cluster, 3 nodes
>            Reporter: Nicolas Liochon
>            Assignee: Nicolas Liochon
>         Attachments: 8380.v1.patch
>
>
> Stack is:
> {noformat}
> 2013-04-19 09:22:45,991 WARN  [IPC Client (682317035) connection to ip-10-6-131-32.ec2.internal/10.6.131.32:60020
from root] ipc.HBaseClient (HBaseClient.java:run(664)) - IPC Client (682317035) connection
to ip-10-6-131-32.ec2.internal/10.6.131.32:60020 from root: unexpected exception receiving
call responses
> java.lang.RuntimeException: java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.readResponse(HBaseClient.java:1017)
> 	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.run(HBaseClient.java:661)
> Caused by: java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.readResponse(HBaseClient.java:1013)
> 	... 1 more
>  1197 sec: 3411081 operations; 324,27 current ops/sec; [INSERT AverageLatency(us)=29332,6]

> {noformat}
> Code:
> {code}
>     protected void readResponse() {
>       if (shouldCloseConnection.get()) return;
>       touch();
>       try {
>         // See HBaseServer.Call.setResponse for where we write out the response.
>         // Total size of the response.  Unused.  But have to read it in anyways.
>         /*int totalSize =*/ in.readInt();
>         // Read the header
>         ResponseHeader responseHeader = ResponseHeader.parseDelimitedFrom(in);
>         int id = responseHeader.getCallId();
>         if (LOG.isDebugEnabled()) {
>           LOG.debug(getName() + ": got response header " +
>             TextFormat.shortDebugString(responseHeader));
>         }
>         Call call = calls.get(id);
>         if (responseHeader.hasException()) {
>           ExceptionResponse exceptionResponse = responseHeader.getException();
>           RemoteException re = createRemoteException(exceptionResponse);
>           if (isFatalConnectionException(exceptionResponse)) {
>             markClosed(re);
>           } else {
>             if (call != null) call.setException(re);
>           }
>         } else {
>           Message rpcResponseType;
>           try {
>             // TODO: Why pb engine pollution in here in this class?  FIX.
>             rpcResponseType =
>               ProtobufRpcClientEngine.Invoker.getReturnProtoType(
>                 reflectionCache.getMethod(remoteId.getProtocol(), call.method.getName()));
 <=========== NPE, because call is null
>           } catch (Exception e) {
>             throw new RuntimeException(e); //local exception
>           }
> {code}

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