[jira] [Created] (HBASE-18379) SnapshotManager#checkSnapshotSupport() should better handle malfunctioning hdfs snapshot

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created HBASE-18379:
------------------------------

             Summary: 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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