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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3187) RS stuck waiting on meta, doesn't recover
Date Mon, 08 Nov 2010 19:28:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12929685#action_12929685
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stack commented on HBASE-3187:
------------------------------

Yeah, we have separate handlers for .META. but this is ordinary open handler needing to update
.META. w/ new location.  Don't know where the .META. was at time.

> RS stuck waiting on meta, doesn't recover
> -----------------------------------------
>
>                 Key: HBASE-3187
>                 URL: https://issues.apache.org/jira/browse/HBASE-3187
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>             Fix For: 0.90.0
>
>
> Saw this testing.... All opener handlers stuck waiting on meta... doesn't recover...
This RS had also been given a bunch of regions to open.
> {code}
> "RS_OPEN_REGION-sv2borg188,60020,1288644070661-2" daemon prio=10 tid=0x0000000042c65000
nid=0x4e61 in Object.wait() [0x00007f9709e5b000]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
>     at java.lang.Object.wait(Native Method)
>     - waiting on <0x00007f972268ad00> (a java.util.concurrent.atomic.AtomicBoolean)
>     at org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMeta(CatalogTracker.java:327)
>     - locked <0x00007f972268ad00> (a java.util.concurrent.atomic.AtomicBoolean)
>     at org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMetaServerConnectionDefault(CatalogTracker.java:362)
>     at org.apache.hadoop.hbase.catalog.MetaEditor.updateRegionLocation(MetaEditor.java:146)
>     at org.apache.hadoop.hbase.regionserver.HRegionServer.postOpenDeployTasks(HRegionServer.java:1280)
>     at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:156)
>     at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:151)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:662)
> "RS_OPEN_REGION-sv2borg188,60020,1288644070661-1" daemon prio=10 tid=0x0000000042ce7800
nid=0x4e5c in Object.wait() [0x00007f9709f5c000]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
>     at java.lang.Object.wait(Native Method)
>     - waiting on <0x00007f972268ad00> (a java.util.concurrent.atomic.AtomicBoolean)
>     at org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMeta(CatalogTracker.java:327)
>     - locked <0x00007f972268ad00> (a java.util.concurrent.atomic.AtomicBoolean)
>     at org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMetaServerConnectionDefault(CatalogTracker.java:362)
>     at org.apache.hadoop.hbase.catalog.MetaEditor.updateRegionLocation(MetaEditor.java:146)
>     at org.apache.hadoop.hbase.regionserver.HRegionServer.postOpenDeployTasks(HRegionServer.java:1280)
>     at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:156)
>     at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:151)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>     at java.lang.Thread.run(Thread.java:662)
> {code}

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