Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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3.3.2
Description
Simple case:
RS3-2 ,[0(busy),2,3,4] (1 missing),0 is busy.
We can get liveblockIndice=[2,3,4], additionalRepl=1.So the DN will get the LiveBitSet=[2,3,4] and targets.length=1.
According to StripedWriter.initTargetIndices(), 0 will get recovered instead of 1. So the internal blocks will become [0(busy),2,3,4,0'(excess)].Although NN will detect, delete the excess replicas and recover the missing block(1) correctly after the wrong recovery of 0', I don't think this process is expected and the recovery of 0' is obviously wrong and not necessary.
Attachments
Issue Links
- is related to
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HDFS-16874 Improve DataNode decommission for Erasure Coding
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- Open
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- links to