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https://issues.apache.org/jira/browse/HDFS-16754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18035465#comment-18035465
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ASF GitHub Bot commented on HDFS-16754:
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github-actions[bot] closed pull request #4840: HDFS-16754. UnderConstruct file
with completed but missed block should be able to recover lease
URL: https://github.com/apache/hadoop/pull/4840
> 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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