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https://issues.apache.org/jira/browse/CASSANDRA-7946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140079#comment-14140079
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Marcus Eriksson commented on CASSANDRA-7946:
--------------------------------------------
+1
> NPE when streaming data to a joining node and dropping table in cluster
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-7946
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7946
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: Cassandra 2.0.9
> Reporter: DOAN DuyHai
> Assignee: Yuki Morishita
> Labels: streaming
> Fix For: 2.0.11, 2.1.1
>
> Attachments: 7946-2.0.txt
>
>
> Summary
> The cluster has 3 nodes with Vnodes. We were adding a 4th one (in auto
> bootstrap mode). The 4 node has stream sessions, receiving data from the
> others.
> While the streaming was going on (it takes quite a while because there are
> 200Gb of data of worth), an existing table is dropped in the cluster and a
> new one is created.
> A few time after, we caught an NPE in the log file of the joining node
> (still not finished joining):
> The NPE is located here:
> https://github.com/apache/cassandra/blob/cassandra-2.0/src/java/org/apache/cassandra/streaming/compress/CompressedStreamReader.java#L63
> It can be a race condition where schema agreement has not reached the
> joining node.
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