Kihwal Lee created HDFS-15422:
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Summary: Reported IBR is partially replaced with stored info when
queuing.
Key: HDFS-15422
URL: https://issues.apache.org/jira/browse/HDFS-15422
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Reporter: Kihwal Lee
When queueing an IBR (incremental block report) on a standby namenode, some of
the reported information is being replaced with the existing stored
information. This can lead to false block corruption.
We had a namenode, after transitioning to active, started reporting missing
blocks with "SIZE_MISMATCH" as corrupt reason. These were blocks that were
appended and the sizes were actually correct on the datanodes. Upon further
investigation, it was determined that the namenode was queueing IBRs with
altered information.
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