HLog periodic roll doesn't seem to care about MemStores
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Key: HBASE-3198
URL: https://issues.apache.org/jira/browse/HBASE-3198
Project: HBase
Issue Type: Bug
Reporter: Jean-Daniel Cryans
Assignee: Jean-Daniel Cryans
Priority: Blocker
Fix For: 0.90.0
>From the mailing list, Erdem Agaoglu found a case where when an HLog gets
>rolled from the periodic log roller and it gets archived even tho the region
>(ROOT) still has edits in the MemStore. I did an experiment on a local empty
>machine and it does look broken:
{noformat}
org.apache.hadoop.hbase.regionserver.LogRoller: Hlog roll period 6000ms elapsed
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter: Using syncFs --
HDFS-200
org.apache.hadoop.hbase.regionserver.wal.HLog: Roll
/hbase-89-su/.logs/hbasedev,60020,1288977933643/10.10.1.177%3A60020.1288977933829,
entries=1,
filesize=295. New hlog
/hbase-89-su/.logs/hbasedev,60020,1288977933643/10.10.1.177%3A60020.1288977943913
org.apache.hadoop.hbase.regionserver.wal.HLog: Found 1 hlogs to remove out of
total 1; oldest outstanding sequenceid is 270055 from region -ROOT-,,0
org.apache.hadoop.hbase.regionserver.wal.HLog: moving old hlog file
/hbase-89-su/.logs/hbasedev,60020,1288977933643/10.10.1.177%3A60020.1288977933829
whose highest sequenceid is 270054 to
/hbase-89-su/.oldlogs/10.10.1.177%3A60020.1288977933829
{noformat}
Marking as Blocker and taking a deeper look.
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