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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2018/04/20 16:00:02 UTC

[jira] [Commented] (HBASE-15109) HM/RS failed to start when "fs.hdfs.impl.disable.cache" is set to true

    [ https://issues.apache.org/jira/browse/HBASE-15109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16445937#comment-16445937 ] 

Hudson commented on HBASE-15109:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-1.2-IT #1105 (See [https://builds.apache.org/job/HBase-1.2-IT/1105/])
HBASE-18862 apply HBASE-15109 to branch-1.2,branch-1.3 (busbey: rev 42471ddf1515a4715b505b4e46774572965c5835)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ShutdownHook.java


> HM/RS failed to start when "fs.hdfs.impl.disable.cache" is set to true
> ----------------------------------------------------------------------
>
>                 Key: HBASE-15109
>                 URL: https://issues.apache.org/jira/browse/HBASE-15109
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 2.0.0
>            Reporter: Pankaj Kumar
>            Assignee: Pankaj Kumar
>            Priority: Critical
>             Fix For: 1.4.0, 2.0.0
>
>         Attachments: HBASE-15109-V2.patch, HBASE-15109-branch-1.patch, HBASE-15109.patch, HBASE-15109.patch
>
>
> HMaster failed to start during installing ShutdownHook when "fs.hdfs.impl.disable.cache" is set to true.
> {noformat}
> 2016-10-10 10:33:28,367 FATAL [master/HOST-10-18-106-146/10.18.106.146:16000] master.HMaster: Unhandled: Failed suppression of fs shutdown hook: org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer@19a003b4
> java.lang.RuntimeException: Failed suppression of fs shutdown hook: org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer@19a003b4
>         at org.apache.hadoop.hbase.regionserver.ShutdownHook.suppressHdfsShutdownHook(ShutdownHook.java:204)
>         at org.apache.hadoop.hbase.regionserver.ShutdownHook.install(ShutdownHook.java:84)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:950)
>         at java.lang.Thread.run(Thread.java:745)
> {noformat}
> And RegionServer is in blocking state until a master is available,
> {noformat}
> "regionserver/HOST-10-18-106-146/10.18.106.146:16020" #17 prio=5 os_prio=0 tid=0x0000000000e4e800 nid=0xdc38 in Object.wait() [0x00007f329dac6000]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         at org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.blockUntilAvailable(ZooKeeperNodeTracker.java:159)
>         - locked <0x00000000ae25c0c8> (a org.apache.hadoop.hbase.zookeeper.MasterAddressTracker)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.blockAndCheckIfStopped(HRegionServer.java:870)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeZooKeeper(HRegionServer.java:809)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:783)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:943)
>         at java.lang.Thread.run(Thread.java:745)
> {noformat}
> During installation, first time it will try to suppress the HDFS shutdownhook by removing the hdfsclientfinalizer from HDFS. Since fs.hdfs.impl.disable.cache is enabled, so removal will be unsuccessful from HDFS  (FS is not cached) and RuntimeException will be thrown with "Failed suppression of fs shutdown hook" message.
> In ShutdownHook,
> {code}
> if (!fsShutdownHooks.containsKey(hdfsClientFinalizer) &&
> !ShutdownHookManager.deleteShutdownHook(hdfsClientFinalizer)) {
> throw new RuntimeException("Failed suppression of fs shutdown hook: " +
> hdfsClientFinalizer);
> }
> {code}



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