[jira] [Updated] (HDFS-16754) UnderConstruct file with missingBlock should be able to recover lease

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-16754?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HDFS-16754:
----------------------------------
    Labels: pull-request-available  (was: )

> UnderConstruct file with missingBlock should be able to recover lease
> ---------------------------------------------------------------------
>
>                 Key: HDFS-16754
>                 URL: https://issues.apache.org/jira/browse/HDFS-16754
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Major
>              Labels: pull-request-available
>
> During looking into the logic of RecoverLease, I guess there is a bug:
> {code:java}
> int nrCompleteBlocks;
> BlockInfo curBlock = null;
> for(nrCompleteBlocks = 0; nrCompleteBlocks < nrBlocks; nrCompleteBlocks++) {
>   curBlock = blocks[nrCompleteBlocks];
>   if(!curBlock.isComplete())
>     break;
>   // Why?
>   assert blockManager.hasMinStorage(curBlock) :
>           "A COMPLETE block is not minimally replicated in " + src;
> } {code}
> RecoverLease just try to align all replicas of the last block of one UnderConstruct file.
> So if the UC file with some completed blocks, which may missed all replicas, should be able to recoverLease.



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