[replication] ReplicationSource can miss a log after RS comes out of GC
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Key: HBASE-3515
URL: https://issues.apache.org/jira/browse/HBASE-3515
Project: HBase
Issue Type: Bug
Affects Versions: 0.90.0
Reporter: Jean-Daniel Cryans
Assignee: Jean-Daniel Cryans
Priority: Critical
Fix For: 0.90.1
This is from Hudson build 1738, if a log is about to be rolled and the ZK
connection is already closed then the replication code will fail at adding the
new log in ZK but the log will still be rolled and it's possible that some
edits will make it in.
>From the log:
{quote}
2011-02-08 10:21:20,618 FATAL
[RegionServer:0;vesta.apache.org,46117,1297160399378.logRoller]
regionserver.HRegionServer(1383):
ABORTING region server serverName=vesta.apache.org,46117,1297160399378,
load=(requests=1525, regions=12,
usedHeap=273, maxHeap=1244): Failed add log to list
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss for
/1/replication/rs/vesta.apache.org,46117,1297160399378/2/vesta.apache.org%3A46117.1297160480509
...
2011-02-08 10:21:22,444 DEBUG
[MASTER_META_SERVER_OPERATIONS-vesta.apache.org:56008-0] wal.HLogSplitter(258):
Splitting hlog 8 of 8:
hdfs://localhost:55474/user/hudson/.logs/vesta.apache.org,46117,1297160399378/vesta.apache.org%3A46117.1297160480509,
length=0
2011-02-08 10:21:22,862 DEBUG
[MASTER_META_SERVER_OPERATIONS-vesta.apache.org:56008-0] wal.HLogSplitter(436):
Pushed=31 entries from
hdfs://localhost:55474/user/hudson/.logs/vesta.apache.org,46117,1297160399378/vesta.apache.org%3A46117.1297160480509
{quote}
The easiest thing to do would be let the exception out and cancel the log roll.
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