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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2014/11/10 23:33:33 UTC
[jira] [Commented] (SPARK-3495) Block replication fails
continuously when the replication target node is dead
[ https://issues.apache.org/jira/browse/SPARK-3495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14205438#comment-14205438 ]
Apache Spark commented on SPARK-3495:
-------------------------------------
User 'tdas' has created a pull request for this issue:
https://github.com/apache/spark/pull/3191
> Block replication fails continuously when the replication target node is dead
> -----------------------------------------------------------------------------
>
> Key: SPARK-3495
> URL: https://issues.apache.org/jira/browse/SPARK-3495
> Project: Spark
> Issue Type: Bug
> Components: Block Manager, Spark Core, Streaming
> Affects Versions: 1.0.2, 1.1.0
> Reporter: Tathagata Das
> Assignee: Tathagata Das
> Priority: Critical
> Fix For: 1.2.0
>
>
> If a block manager (say, A) wants to replicate a block and the node chosen for replication (say, B) is dead, then the attempt to send the block to B fails. However, this continues to fail indefinitely. Even if the driver learns about the demise of the B, A continues to try replicating to B and failing miserably.
> The reason behind this bug is that A initially fetches a list of peers from the driver (when B was active), but never updates it after B is dead. This affects Spark Streaming as its receiver uses block replication.
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