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https://issues.apache.org/jira/browse/HBASE-5844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506832#comment-13506832
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Jean-Daniel Cryans commented on HBASE-5844:
-------------------------------------------
Encountered another problem that I think I can link to this jira, I was trying
to run HBase from trunk without internet access and like in my Sept 25th
comment, I get an empty line after start-hbase.sh but now nothing is running.
The .log file doesn't show anything after logging ulimit and nothing's in the
.out file. After running some bash -x, I was able to figure out that the nohup
output was being suppressed. See:
{noformat}
jdcryans-MBPr:hbase-github jdcryans$ ./bin/start-hbase.sh
jdcryans-MBPr:hbase-github jdcryans$
jdcryans-MBPr:hbase-github jdcryans$ bash -x ./bin/start-hbase.sh
... some stuff then
+ /Users/jdcryans/git/hbase-github/bin/hbase-daemon.sh start master
jdcryans-MBPr:hbase-github jdcryans$ bash -x
/Users/jdcryans/git/hbase-github/bin/hbase-daemon.sh start master
... more stuff
+ nohup /Users/jdcryans/git/hbase-github/bin/hbase-daemon.sh --config
/Users/jdcryans/git/hbase-github/bin/../conf internal_start master
jdcryans-MBPr:hbase-github jdcryans$ nohup
/Users/jdcryans/git/hbase-github/bin/hbase-daemon.sh --config
/Users/jdcryans/git/hbase-github/bin/../conf internal_start master
appending output to nohup.out
{noformat}
So now I see that it's writing to nohup.out, which in turn tells me what really
happened:
{noformat}
Caused by: java.lang.ClassNotFoundException:
org.apache.zookeeper.KeeperException
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
{noformat}
Reproing can be done by physically deleting any jar listed in
target/cached_classpath.txt. In my case I think the jar wasn't available
because I had no internet connection.
I wonder what other errors it could hide like this.
> Delete the region servers znode after a regions server crash
> ------------------------------------------------------------
>
> Key: HBASE-5844
> URL: https://issues.apache.org/jira/browse/HBASE-5844
> Project: HBase
> Issue Type: Improvement
> Components: regionserver, scripts
> Affects Versions: 0.96.0
> Reporter: nkeywal
> Assignee: nkeywal
> Fix For: 0.96.0
>
> Attachments: 5844.v1.patch, 5844.v2.patch, 5844.v3.patch,
> 5844.v3.patch, 5844.v4.patch
>
>
> today, if the regions server crashes, its znode is not deleted in ZooKeeper.
> So the recovery process will stop only after a timeout, usually 30s.
> By deleting the znode in start script, we remove this delay and the recovery
> starts immediately.
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