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From Anoop John <anoop.hb...@gmail.com>
Subject Re: HConnectionManager$HConnectionImplementation.locateRegionInMeta
Date Thu, 30 May 2013 04:16:27 GMT
Can you have a look at issue HBASE-8476?  Seems related?  A fix is
available in HBASE-8346's patch..

-Anoop-

On Thu, May 30, 2013 at 9:21 AM, Kireet <kireet@feedly.com> wrote:

> We are running hbase 0.94.6 in a concurrent environment and we are seeing
> the majority of our code stuck in this method at the synchronized block
> (line 997). Is there some configuration we can change to avoid it? It seems
> like we could disable prefetching, but that sounds like it could cause
> other problems?
>
>  - org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**locateRegionInMeta(byte[], byte[], byte[],
> boolean, java.lang.Object, boolean) @bci=149, line=997 (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**locateRegion(byte[], byte[], boolean,
> boolean) @bci=212, line=889 (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**locateRegion(byte[], byte[]) @bci=5, line=846
> (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**processBatchCallback(java.**util.List,
> byte[], java.util.concurrent.**ExecutorService, java.lang.Object[],
> org.apache.hadoop.hbase.**client.coprocessor.Batch$**Callback) @bci=194,
> line=1533 (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HConnectionManager$**
> HConnectionImplementation.**processBatch(java.util.List, byte[],
> java.util.concurrent.**ExecutorService, java.lang.Object[]) @bci=30,
> line=1418 (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HTable.batch(java.util.**List)
> @bci=24, line=702 (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HTable.get(java.util.**List) @bci=2,
> line=671 (Compiled frame)
>  - org.apache.hadoop.hbase.**client.HTablePool$**
> PooledHTable.get(java.util.**List) @bci=5, line=367 (Compiled frame)
>
>

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