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https://issues.apache.org/jira/browse/HBASE-18137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16045681#comment-16045681
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Hudson commented on HBASE-18137:
--------------------------------
SUCCESS: Integrated in Jenkins build HBase-1.2-IT #885 (See
[https://builds.apache.org/job/HBase-1.2-IT/885/])
HBASE-18137 Replication gets stuck for empty WALs (apurtell: rev
c1289960dd7ebf94c615d00ef9c77c27737496e1)
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationSmallTests.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSource.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationBase.java
> Replication gets stuck for empty WALs
> -------------------------------------
>
> Key: HBASE-18137
> URL: https://issues.apache.org/jira/browse/HBASE-18137
> Project: HBase
> Issue Type: Bug
> Components: Replication
> Affects Versions: 1.3.1
> Reporter: Ashu Pachauri
> Assignee: Vincent Poon
> Priority: Critical
> Fix For: 2.0.0, 1.4.0, 1.3.2, 1.2.7
>
> Attachments: HBASE-18137.branch-1.3.v1.patch,
> HBASE-18137.branch-1.3.v2.patch, HBASE-18137.branch-1.3.v3.patch,
> HBASE-18137.branch-1.v1.patch, HBASE-18137.branch-1.v2.patch,
> HBASE-18137.master.v1.patch
>
>
> Replication assumes that only the last WAL of a recovered queue can be empty.
> But, intermittent DFS issues may cause empty WALs being created (without the
> PWAL magic), and a roll of WAL to happen without a regionserver crash. This
> will cause recovered queues to have empty WALs in the middle. This cause
> replication to get stuck:
> {code}
> TRACE regionserver.ReplicationSource: Opening log <wal_file>
> WARN regionserver.ReplicationSource: <peer_cluster_id>-<recovered_queue> Got:
> java.io.EOFException
> at java.io.DataInputStream.readFully(DataInputStream.java:197)
> at java.io.DataInputStream.readFully(DataInputStream.java:169)
> at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1915)
> at
> org.apache.hadoop.io.SequenceFile$Reader.initialize(SequenceFile.java:1880)
> at
> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1829)
> at
> org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1843)
> at
> org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader$WALReader.<init>(SequenceFileLogReader.java:70)
> at
> org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader.reset(SequenceFileLogReader.java:168)
> at
> org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader.initReader(SequenceFileLogReader.java:177)
> at
> org.apache.hadoop.hbase.regionserver.wal.ReaderBase.init(ReaderBase.java:66)
> at
> org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:312)
> at
> org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:276)
> at
> org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:264)
> at
> org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:423)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationWALReaderManager.openReader(ReplicationWALReaderManager.java:70)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource$ReplicationSourceWorkerThread.openReader(ReplicationSource.java:830)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource$ReplicationSourceWorkerThread.run(ReplicationSource.java:572)
> {code}
> The WAL in question was completely empty but there were other WALs in the
> recovered queue which were newer and non-empty.
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