Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
HBase >> mail # user >> slow operation in postPut


+
Pavel Hančar 2013-08-01, 12:58
+
Ted Yu 2013-08-01, 13:08
Copy link to this message
-
Re: slow operation in postPut
If I want to use multi-thread with thread safe, which class should I use?
On Thu, Aug 1, 2013 at 3:08 PM, Ted Yu <[EMAIL PROTECTED]> wrote:

> HTable is not thread safe.
>
> On Aug 1, 2013, at 5:58 AM, Pavel Hančar <[EMAIL PROTECTED]> wrote:
>
> > Hello,
> > I have a class extending BaseRegionObserver and I use the postPut method
> to
> > run a slow procedure. I'd like to run more these procedures in more
> > threads. Is it possible to run more HTable.put(put) methods
> concurrently? I
> > tried, but I have this error for each thread:
> >
> > Exception in thread "Thread-3" java.lang.IndexOutOfBoundsException:
> Index:
> > 1, Size: 1
> >        at java.util.ArrayList.rangeCheck(ArrayList.java:604)
> >        at java.util.ArrayList.remove(ArrayList.java:445)
> >        at
> > org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:966)
> >        at org.apache.hadoop.hbase.client.HTable.doPut(HTable.java:811)
> >        at org.apache.hadoop.hbase.client.HTable.put(HTable.java:786)
> >        at img.PutFilesThread.run(PutFilesThread.java:74)
> >        at java.lang.Thread.run(Thread.java:724)
> >
> > Anybody has an idea?
> >  Thanks,
> >  Pavel Hančar
>
+
Ted Yu 2013-08-01, 13:38
+
yonghu 2013-08-01, 13:37