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https://issues.apache.org/jira/browse/HDFS-14649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lisheng Sun updated HDFS-14649:
-------------------------------
Description:
Add suspect probe for DeadNodeDetector.
when some DataNode of the block is found to inaccessible, put the DataNode
into it will be placed in the Suspicious Node list. Because when DataNode is
not accessible, it is likely that the replica has been removed from the
DataNode.Therefore, it needs to be confirmed by re-probing and requires a
higher priority processing.
And when DataNode is placed in the Suspicious Node list, it is accessed by
other dfsinputstream.
was:Add suspect probe for DeadNodeDetector.
> Add suspect probe for DeadNodeDetector
> --------------------------------------
>
> Key: HDFS-14649
> URL: https://issues.apache.org/jira/browse/HDFS-14649
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Lisheng Sun
> Assignee: Lisheng Sun
> Priority: Major
> Attachments: HDFS-14649.001.patch, HDFS-14649.002.patch
>
>
> Add suspect probe for DeadNodeDetector.
> when some DataNode of the block is found to inaccessible, put the DataNode
> into it will be placed in the Suspicious Node list. Because when DataNode is
> not accessible, it is likely that the replica has been removed from the
> DataNode.Therefore, it needs to be confirmed by re-probing and requires a
> higher priority processing.
> And when DataNode is placed in the Suspicious Node list, it is accessed by
> other dfsinputstream.
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