Felix N created HDFS-17812:
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Summary: BlockIteratorImpl can miss blocks under certain conditions
Key: HDFS-17812
URL: https://issues.apache.org/jira/browse/HDFS-17812
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Felix N
Assignee: Felix N
# BlockIteratorImpl#getSubdirEntries sorts by strings, meaning subdir20 comes
before subdir4, which can result in a bigger block id being listed before a
smaller block id
# If block cleanup happens before state.curEntry is reset to null, stale data
can carry over into the next loop
# Search for a bigger ID than the range in nextSorted(entries, state.curEntry)
-> null -> subdir is skipped.
Usually happens during DiskBalancer operations.
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