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Posted to issues@hbase.apache.org by "Pankaj Kumar (JIRA)" <ji...@apache.org> on 2016/01/21 14:24:39 UTC
[jira] [Updated] (HBASE-15109) Region server 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:all-tabpanel ]
Pankaj Kumar updated HBASE-15109:
---------------------------------
Attachment: HBASE-15109-branch-1.patch
Patch with approach 1, please review.
> Region server 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: 1.0.0
> Reporter: Pankaj Kumar
> Assignee: Pankaj Kumar
> Priority: Critical
> Attachments: HBASE-15109-branch-1.patch
>
>
> Region server failed to start during installing ShutdownHook when "fs.hdfs.impl.disable.cache" is set to true in core-site.xml at HBase side.
> {code}
> 2016-01-14 15:30:56,358 | FATAL | regionserver/ds2/192.168.152.230:21302 | ABORTING region server ds2,21302,1452756654352: Unhandled: Failed suppression of fs shutdown hook: org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer@571527d6 | org.apache.hadoop.hbase.regionserver.HRegionServer.abort(HRegionServer.java:2054)
> java.lang.RuntimeException: Failed suppression of fs shutdown hook: org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer@571527d6
> 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:893)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> 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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