Josh Elser created HBASE-26267:
----------------------------------
Summary: Master initialization fails if Master Region WAL dir is
missing
Key: HBASE-26267
URL: https://issues.apache.org/jira/browse/HBASE-26267
Project: HBase
Issue Type: Improvement
Components: master
Affects Versions: 2.4.6
Reporter: Josh Elser
Assignee: Josh Elser
Fix For: 2.5.0, 3.0.0-alpha-2, 2.4.7
>From a recent branch-2.4 build:
{noformat}
2021-09-07 19:31:19,666 ERROR [master/localhost:16000:becomeActiveMaster]
master.HMaster(159): ***** ABORTING master localhost,16000,1631057476442:
Unhandled exception. Starting shutdown. *****
java.io.FileNotFoundException: File
hdfs://localhost:8020/hbase-2.4-wals/MasterData/WALs does not exist.
at
org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:1059)
at
org.apache.hadoop.hdfs.DistributedFileSystem.access$1000(DistributedFileSystem.java:131)
at
org.apache.hadoop.hdfs.DistributedFileSystem$24.doCall(DistributedFileSystem.java:1119)
at
org.apache.hadoop.hdfs.DistributedFileSystem$24.doCall(DistributedFileSystem.java:1116)
at
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at
org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:1126)
at
org.apache.hadoop.hbase.master.region.MasterRegion.open(MasterRegion.java:226)
at
org.apache.hadoop.hbase.master.region.MasterRegion.create(MasterRegion.java:303)
at
org.apache.hadoop.hbase.master.region.MasterRegionFactory.create(MasterRegionFactory.java:104)
at
org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:839)
at
org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2189)
at org.apache.hadoop.hbase.master.HMaster.lambda$run$0(HMaster.java:512)
at java.lang.Thread.run(Thread.java:748)
{noformat}
If the WAL directory is missing but the Master Region already exists, we will
try to list the contents of the Master Region's WAL directory which may or may
not exist. If we simply check to make sure the directory exists and then the
rest of the initialization code works as expected.
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