[
https://issues.apache.org/jira/browse/HDFS-8540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tsz Wo Nicholas Sze updated HDFS-8540:
--------------------------------------
Hadoop Flags: Reviewed
+1 the new patch looks good.
> Mover should exit with NO_MOVE_BLOCK if no block can be moved
> -------------------------------------------------------------
>
> Key: HDFS-8540
> URL: https://issues.apache.org/jira/browse/HDFS-8540
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Reporter: Tsz Wo Nicholas Sze
> Assignee: surendra singh lilhore
> Attachments: HDFS-8540.patch, HDFS-8540_1.patch, HDFS-8540_2.patch,
> HDFS-8540_3.patch
>
>
> When there are files not satisfying their storage policy and no move is
> possible, Mover exits with SUCCESS. It should exit with NO_MOVE_BLOCK.
> The bug seems in the following code. When StorageTypeDiff is not empty and
> scheduleMoves4Block return false, it does not update hasRemaining. Also,
> there is no indication of "No block can be moved" for the entire iteration.
> {code}
> //Mover.processFile(..)
> if (!diff.removeOverlap(true)) {
> if (scheduleMoves4Block(diff, lb, ecSchema)) {
> hasRemaining |= (diff.existing.size() > 1 &&
> diff.expected.size() > 1);
> }
> }
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
