SequenceFileLogReader#getPos may get wrong length on DFS restart
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Key: HBASE-5745
URL: https://issues.apache.org/jira/browse/HBASE-5745
Project: HBase
Issue Type: Bug
Components: wal
Affects Versions: 0.96.0
Reporter: Uma Maheswara Rao G
Assignee: Uma Maheswara Rao G
Priority: Critical
This is actually a kind of integration bug from Hbase perspective.
Currently HDFS will count the partial block length as 0, if there are no
locations found for the partial block. This can happend opn DFS restart, before
DNs completely reports to NN.
Explained the scenario in HDFS-3222. Actually this is a bug in HDFS. we may
solve this in latest versions.
So, whatever the versions Hbase using may have this bug. HMaster may not be
able to replay the complete edits if there is an Hmaster switch also at the
same time.
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