i tried with a smaller caching i.e 10, it failed again, not its not really
a big cell. this small cluster(4 nodes) is only used for Hbase, i am
currently using hbase-0.92.1-cdh4.0.1. , could you just let me know how
could i debug this issue ?
aused by: org.apache.hadoop.hbase.client.ScannerTimeoutException:
99560ms passed since the last invocation, timeout is currently set to
60000
at
org.apache.hadoop.hbase.client.HTable$ClientScanner.next(HTable.java:1302)
at
org.apache.hadoop.hbase.client.HTable$ClientScanner$1.hasNext(HTable.java:1399)
... 5 more
Caused by: org.apache.hadoop.hbase.UnknownScannerException:
org.apache.hadoop.hbase.UnknownScannerException: Name:
-8889369042827960647
at
org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:2114)
at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1336)
On Mon, Sep 10, 2012 at 10:53 PM, Stack <[email protected]> wrote:
> On Mon, Sep 10, 2012 at 10:13 AM, Dhirendra Singh <[email protected]>
> wrote:
> > I am facing this exception while iterating over a big table, by default
> i
> > have specified caching as 100,
> >
> > i am getting the below exception, even though i checked there are several
> > calls made to the scanner before it threw this exception, but somehow its
> > saying 86095ms were passed since last invocation.
> >
> > i also observed that if it set scan.setCaching(false), it succeeds,
> could
> > some one please explain or point me to some document as if what's
> happening
> > here and what's the best practices to avoid it.
> >
> >
>
> Try again cachine < 100. See if it works. A big cell? A GC pause?
> You should be able to tell roughly which server is being traversed
> when you get the timeout. Anything else going on on that server at
> the time? What version of HBase?
> St.Ack
>
--
Warm Regards,
Dhirendra Pratap
+91. 9717394713
