Rushabh S Shah created HDFS-7548:
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Summary: Corrupt block reporting delayed until datablock scanner
thread detects it
Key: HDFS-7548
URL: https://issues.apache.org/jira/browse/HDFS-7548
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.5.0
Reporter: Rushabh S Shah
Assignee: Rushabh S Shah
When there is one datanode holding the block and that block happened to be
corrupt, namenode would keep on trying to replicate the block repeatedly but it
would only report the block as corrupt only when the data block scanner thread
of the datanode picks up this bad block.
Requesting improvement in namenode reporting so that corrupt replica would be
reported when there is only 1 replica and the replication of that replica keeps
on failing with the checksum error.
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