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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15109) HM/RS failed to start when "fs.hdfs.impl.disable.cache" is set to true
Date Wed, 12 Oct 2016 17:56:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15569412#comment-15569412
] 

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

FAILURE: Integrated in Jenkins build HBase-1.4 #463 (See [https://builds.apache.org/job/HBase-1.4/463/])
HBASE-15109 HM/RS failed to start when "fs.hdfs.impl.disable.cache" is (tedyu: rev bf0382719698de6368dea3064c322a20c126fcf4)
* (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: 2.0.0, 1.4.0
>
>         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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