Re: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-11 Thread HARI KUMAR
Hi, Are u trying to do parallel scans. If yes, check the time taken for GC and the number of calls that can be served at your end point. Best Regards N.Hari Kumar On Tue, Sep 11, 2012 at 8:22 AM, Dhirendra Singh dps...@gmail.com wrote: i tried with a smaller caching i.e 10, it failed again,

Re: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-11 Thread HARI KUMAR
For GC Monitoring, Add Parameters export HBASE_OPTS=$HBASE_OPTS -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:$HBASE_HOME/logs/gc-hbase.log to hbase-env.sh and try to view the file using tools like GCViewer. or use tools like VisualVM to look at your GC Consumption. ./hari Add

Re: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-11 Thread Otis Gospodnetic
For pretty graphs with JVM GC info + system + HBase metrics you could also easily hook up SPM to your cluster. See URL in signature. Otis -- Performance Monitoring - http://sematext.com/spm On Sep 11, 2012 6:30 AM, HARI KUMAR harikum2...@gmail.com wrote: For GC Monitoring, Add Parameters

Re: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-11 Thread Dhirendra Singh
could someone please clarify, when i say caching 100 or any number, where does this actually happen on server (cluster ) or client. if i assume it happens on cluster, so does this ScannerTimeOut is because of caching as the server might have run out of memory and hence not able to respond

RE: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-11 Thread Anoop Sam John
@hbase.apache.org Subject: Re: Getting ScannerTimeoutException even after several calls in the specified time limit could someone please clarify, when i say caching 100 or any number, where does this actually happen on server (cluster ) or client. if i assume it happens on cluster, so does

Re: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-10 Thread Stack
On Mon, Sep 10, 2012 at 10:13 AM, Dhirendra Singh dps...@gmail.com 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

Re: Getting ScannerTimeoutException even after several calls in the specified time limit

2012-09-10 Thread Dhirendra Singh
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: