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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18379) SnapshotManager#checkSnapshotSupport() should better handle malfunctioning hdfs snapshot
Date Fri, 14 Jul 2017 11:15:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16087190#comment-16087190
] 

Ted Yu commented on HBASE-18379:
--------------------------------

We can target master and branch-1 first. 

> SnapshotManager#checkSnapshotSupport() should better handle malfunctioning hdfs snapshot
> ----------------------------------------------------------------------------------------
>
>                 Key: HBASE-18379
>                 URL: https://issues.apache.org/jira/browse/HBASE-18379
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>
> The following was observed by a customer which prevented master from coming up:
> {code}
> 2017-07-13 13:25:07,898 FATAL [xyz:16000.activeMasterManager] master.HMaster: Failed
to become active master
> java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute
URI: Daily_Snapshot_Apps_2017-xx
> at org.apache.hadoop.fs.Path.initialize(Path.java:205)
> at org.apache.hadoop.fs.Path.<init>(Path.java:171)
> at org.apache.hadoop.fs.Path.<init>(Path.java:93)
> at org.apache.hadoop.hdfs.protocol.HdfsFileStatus.getFullPath(HdfsFileStatus.java:230)
> at org.apache.hadoop.hdfs.protocol.HdfsFileStatus.makeQualified(HdfsFileStatus.java:263)
> at org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:911)
> at org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:113)
> at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:966)
> at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:962)
> at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:962)
> at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1534)
> at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1574)
> at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.getCompletedSnapshots(SnapshotManager.java:206)
> at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.checkSnapshotSupport(SnapshotManager.java:1011)
> at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.initialize(SnapshotManager.java:1070)
> at org.apache.hadoop.hbase.procedure.MasterProcedureManagerHost.initialize(MasterProcedureManagerHost.java:50)
> at org.apache.hadoop.hbase.master.HMaster.initializeZKBasedSystemTrackers(HMaster.java:667)
> at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:732)
> at org.apache.hadoop.hbase.master.HMaster.access$500(HMaster.java:213)
> at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1863)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.net.URISyntaxException: Relative path in absolute URI: Daily_Snapshot_Apps_2017-xx
> at java.net.URI.checkPath(URI.java:1823)
> at java.net.URI.<init>(URI.java:745)
> at org.apache.hadoop.fs.Path.initialize(Path.java:202)
> {code}
> Turns out the exception can be reproduced using hdfs command line accessing .snapshot
directory.
> SnapshotManager#checkSnapshotSupport() should better handle malfunctioning hdfs snapshot
so that master starts up.



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