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Posted to issues@hbase.apache.org by "Duo Zhang (JIRA)" <ji...@apache.org> on 2019/02/27 08:50:00 UTC
[jira] [Updated] (HBASE-21751) WAL creation fails during region
open may cause region assign forever fail
[ https://issues.apache.org/jira/browse/HBASE-21751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Duo Zhang updated HBASE-21751:
------------------------------
Fix Version/s: (was: 2.1.4)
2.1.5
> WAL creation fails during region open may cause region assign forever fail
> --------------------------------------------------------------------------
>
> Key: HBASE-21751
> URL: https://issues.apache.org/jira/browse/HBASE-21751
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.1.2, 2.0.4
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Major
> Fix For: 2.2.0, 2.0.6, 2.1.5
>
> Attachments: HBASE-21751.patch, HBASE-21751v2.patch
>
>
> During the first region opens on the RS, WALFactory will create a WAL file, but if the wal creation fails, in some cases, HDFS will leave a empty file in the dir(e.g. disk full, file is created succesfully but block allocation fails). We have a check in AbstractFSWAL that if WAL belong to the same factory exists, then a error will be throw. Thus, the region can never be open on this RS later.
> {code:java}
> 2019-01-17 02:15:53,320 ERROR [RS_OPEN_META-regionserver/server003:16020-0] handler.OpenRegionHandler(301): Failed open of region=hbase:meta,,1.1588230740
> java.io.IOException: Target WAL already exists within directory hdfs://cluster/hbase/WALs/server003.hbase.hostname.com,16020,1545269815888
> at org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL.<init>(AbstractFSWAL.java:382)
> at org.apache.hadoop.hbase.regionserver.wal.AsyncFSWAL.<init>(AsyncFSWAL.java:210)
> at org.apache.hadoop.hbase.wal.AsyncFSWALProvider.createWAL(AsyncFSWALProvider.java:72)
> at org.apache.hadoop.hbase.wal.AsyncFSWALProvider.createWAL(AsyncFSWALProvider.java:47)
> at org.apache.hadoop.hbase.wal.AbstractFSWALProvider.getWAL(AbstractFSWALProvider.java:138)
> at org.apache.hadoop.hbase.wal.AbstractFSWALProvider.getWAL(AbstractFSWALProvider.java:57)
> at org.apache.hadoop.hbase.wal.WALFactory.getWAL(WALFactory.java:264)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.getWAL(HRegionServer.java:2085)
> at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:284)
> at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108)
> at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:104)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
> at java.lang.Thread.run(Thread.java:834)
> {code}
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