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https://issues.apache.org/jira/browse/SPARK-4026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14178967#comment-14178967
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Apache Spark commented on SPARK-4026:
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User 'tdas' has created a pull request for this issue:
https://github.com/apache/spark/pull/2882
> Write ahead log to synchronously write received data to HDFS and recover on
> driver failure
> ------------------------------------------------------------------------------------------
>
> Key: SPARK-4026
> URL: https://issues.apache.org/jira/browse/SPARK-4026
> Project: Spark
> Issue Type: Sub-task
> Components: Streaming
> Reporter: Tathagata Das
> Assignee: Tathagata Das
> Priority: Critical
>
> As part of the effort to avoid data loss on Spark Streaming driver failure,
> we want to implement a write ahead log that can write received data to HDFS.
> This allows the received data to be persist across driver failures. So when
> the streaming driver is restarted, it can find and reprocess all the data
> that were received but not processed.
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