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Posted to commits@cassandra.apache.org by "Jack Krupansky (JIRA)" <ji...@apache.org> on 2014/04/05 03:30:16 UTC
[jira] [Commented] (CASSANDRA-6984) NullPointerException in
Streaming During Repair
[ https://issues.apache.org/jira/browse/CASSANDRA-6984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13960891#comment-13960891 ]
Jack Krupansky commented on CASSANDRA-6984:
-------------------------------------------
Is there any suggested workaround before a patch becomes generally available? Such as some other repair or rebuild sequence or parameters?
Here's a SO user who appears to be hitting this with DataStax Enterprise, which uses C* 2.0.
http://stackoverflow.com/questions/22837895/restarting-a-failed-stalled-stream-during-bootstrap-of-new-node
> NullPointerException in Streaming During Repair
> -----------------------------------------------
>
> Key: CASSANDRA-6984
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6984
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Tyler Hobbs
> Assignee: Yuki Morishita
> Priority: Blocker
> Fix For: 2.0.7
>
>
> In cassandra-2.0, I can trigger a NullPointerException with a repair. These steps should reproduce the issue:
> * create a three node ccm cluster (with vnodes)
> * start a stress write (I'm using {{tools/bin/cassandra-stress --replication-factor=3 -n 10000000 -k -t 1}})
> * stop node3 while stress is running, then wait a minute
> * start node 3
> * run "ccm node3 repair"
> In the logs for node1, I see this:
> {noformat}
> ERROR [STREAM-OUT-/127.0.0.3] 2014-04-04 17:40:08,547 CassandraDaemon.java (line 198) Exception in thread Thread[STREAM-OUT-/127.0.0.3,5,main]
> java.lang.NullPointerException
> at org.apache.cassandra.streaming.ConnectionHandler$MessageHandler.signalCloseDone(ConnectionHandler.java:249)
> at org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.run(ConnectionHandler.java:375)
> at java.lang.Thread.run(Thread.java:724)
> {noformat}
> After applying Yuki's suggested patch:
> {noformat}
> diff --git a/src/java/org/apache/cassandra/streaming/ConnectionHandler.java b/src/java/org/apache/cassandra/streaming/ConnectionHandler.java
> index 356138b..b06a818 100644
> --- a/src/java/org/apache/cassandra/streaming/ConnectionHandler.java
> +++ b/src/java/org/apache/cassandra/streaming/ConnectionHandler.java
> @@ -366,7 +366,7 @@ public class ConnectionHandler
> {
> throw new AssertionError(e);
> }
> - catch (IOException e)
> + catch (Throwable e)
> {
> session.onError(e);
> }
> {noformat}
> I see a new NPE:
> {noformat}
> ERROR [STREAM-OUT-/127.0.0.3] 2014-04-04 18:12:35,912 StreamSession.java (line 420) [Stream #9b592af0-bc4e-11e3-a6f9-43eb3a328df9] Streaming error occurred
> java.lang.NullPointerException
> at org.apache.cassandra.streaming.StreamSession.fileSent(StreamSession.java:465)
> at org.apache.cassandra.streaming.messages.OutgoingFileMessage$1.serialize(OutgoingFileMessage.java:60)
> at org.apache.cassandra.streaming.messages.OutgoingFileMessage$1.serialize(OutgoingFileMessage.java:42)
> at org.apache.cassandra.streaming.messages.StreamMessage.serialize(StreamMessage.java:45)
> at org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.sendMessage(ConnectionHandler.java:383)
> at org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.run(ConnectionHandler.java:355)
> at java.lang.Thread.run(Thread.java:724)
> {noformat}
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