default walog copy/sort uses replication of 1
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Key: ACCUMULO-509
URL: https://issues.apache.org/jira/browse/ACCUMULO-509
Project: Accumulo
Issue Type: Bug
Components: logger
Environment: medium size cluster
Reporter: Eric Newton
Assignee: Eric Newton
Priority: Trivial
Fix For: 1.4.1
During recovery, the logger copied/sorted a recovery walog to hdfs. The copy
was ok, but there was a checksum error when replaying the data. The system did
not recover without manual intervention. The work-around was to find the
datanode serving the back block, and stop it. Then I removed the bad recovery
file and restarted the master. The copy/sort took place again, and used a
different datanode. Recovery proceeded successfully.
We need to use a higher replication and/or a more sophisticated approach to
verifying and restarting recoveries.
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