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https://issues.apache.org/jira/browse/HBASE-16554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15505128#comment-15505128
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Hudson commented on HBASE-16554:
--------------------------------
SUCCESS: Integrated in Jenkins build HBase-Trunk_matrix #1636 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/1636/])
HBASE-16554 Rebuild WAL tracker if trailer is corrupted. (appy: rev
b2eac0da33c4161aa8188213171afb03b72048a4)
* (edit)
hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.java
* (edit)
hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/ProcedureStoreTracker.java
* (edit)
hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALFormat.java
* (edit)
hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALFile.java
* (edit)
hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALFormatReader.java
* (edit)
hbase-procedure/src/test/java/org/apache/hadoop/hbase/procedure2/store/wal/TestWALProcedureStore.java
> Procedure V2 - Recover 'updated' part of WAL tracker if trailer is corrupted.
> -----------------------------------------------------------------------------
>
> Key: HBASE-16554
> URL: https://issues.apache.org/jira/browse/HBASE-16554
> Project: HBase
> Issue Type: Sub-task
> Reporter: Appy
> Assignee: Appy
> Fix For: 2.0.0
>
> Attachments: HBASE-16554.master.001.patch,
> HBASE-16554.master.002.patch, tracker-rebuild.patch
>
>
> If the last wal was closed cleanly, the global tracker will be the last wal
> tracker (no rebuild needed)
> if the last wal does not have a tracker (corrupted/master-killed). on load()
> we will rebuild the global tracker.
> To compute quickly which files should be deleted, we also want the tracker of
> each file.
> if the wal was closed properly and has a tracker we are good, if not we need
> to rebuild the tracker for that file.
> each file tracker contains a bitmap about what is in the wal (the updated
> bitmap), which is easy to compute just by reading each entry of the wal.
> The 'deleted' bitmap keeps track of the "running procedures" up to that wal,
> however, it's not required by WAL cleaner, so we don't bother recovering it.
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