[jira] [Resolved] (SPARK-18957) when WAL time out, loss data

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-18957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-18957.
-------------------------------
    Resolution: Not A Problem

> when WAL time out, loss data
> ----------------------------
>
>                 Key: SPARK-18957
>                 URL: https://issues.apache.org/jira/browse/SPARK-18957
>             Project: Spark
>          Issue Type: Bug
>          Components: Block Manager
>    Affects Versions: 1.6.2
>         Environment: hadoop2.7.1 spark1.6.2
>            Reporter: xy7
>
> When sparkStreaming's blockManager writeAheadLog timeout, it cause keepPushBlocks to be stoped, with this warn log
> "WARN scheduler.ReceiverTracker: Error reported by receiver for stream 0: Error in block pushing thread - java.util.concurrent.TimeoutException: Futures timed out after [30 seconds]".
> But the receiver continued to get data from MQ, so the data lost. In sparkUI, we would found all the batchs turned to 0 events.



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