[jira] [Updated] (SPARK-3495) Block replication fails continuously when the replication target node is dead

["Tathagata Das (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-3495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tathagata Das updated SPARK-3495:
---------------------------------
    Target Version/s: 1.1.1, 1.2.0  (was: 1.2.0)

> 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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