Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2013-07-24 Thread ARNAB MAJI
How to reduce the Store File Index?Can you give me the conf filename and parameter I need to set I am in real need. Also tell me the way to increase hfile block size?

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2013-07-24 Thread Ted Yu
See 6.3.2 under http://hbase.apache.org/book.html#rowkey.design Cheers On Wed, Jul 24, 2013 at 12:19 AM, ARNAB MAJI bobbybi...@gmail.com wrote: How to reduce the Store File Index?Can you give me the conf filename and parameter I need to set I am in real need. Also tell me the way to increase

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2013-07-24 Thread Ted Yu
See also http://hbase.apache.org/book.html#schema.cf.blocksize Cheers On Wed, Jul 24, 2013 at 6:19 AM, Ted Yu yuzhih...@gmail.com wrote: See 6.3.2 under http://hbase.apache.org/book.html#rowkey.design Cheers On Wed, Jul 24, 2013 at 12:19 AM, ARNAB MAJI bobbybi...@gmail.com wrote: How to

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-31 Thread Himanshu Vashishtha
Sorry, I missed the fact that you guys were talking about the oome thing (the exceptions were of sockettimeout) Can you give the log snippet where it oome'd? I want to explore this use case :) You have about 200 regions per server, and each region configured to 500MB makes it 100GB data per

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-25 Thread Oleg Ruchovets
Thank you very much for your post , It very similar what is happening in our environment. Before we are going to increase HeapSize we want to make some tuning for hbase memstore and related components. 1) Currently our configuration parameters related to memstore are default. --

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-25 Thread Chris Tarnas
On Aug 25, 2011, at 1:55 AM, Oleg Ruchovets wrote: Thank you very much for your post , It very similar what is happening in our environment. Before we are going to increase HeapSize we want to make some tuning for hbase memstore and related components. We run with 12-15GB of heap, 4

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-24 Thread Oleg Ruchovets
Thanks for your feedback. The point is that once we restart hbase memory footprint is far below 4 GB. The system runs well for couple of days and then the heap reaches 4GB which causes the region to crash. This may indicate on memory leak since once we restart hbase the problem is solved (or

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-24 Thread Chris Tarnas
We had a similar OOME problem and and we solved it by allocating more heap space. The underlying cause for us was as the table grew, the StoreFileIndex grew taking up a larger and larger chunk of heap. What caused this to be a problem is that Memstore grows rapidly during inserts and its

RE: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-23 Thread Buttler, David
Have you looked at the logs of the region servers? That is a good first place to look. How many regions are in your system? If you are using MSLAB, it reserves 2MB/region as a buffer -- that can add up when you have lots of regions. Given so little information all my guesses are going to be

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-23 Thread Oleg Ruchovets
Thank you for detailed response, On Tue, Aug 23, 2011 at 7:49 PM, Buttler, David buttl...@llnl.gov wrote: Have you looked at the logs of the region servers? That is a good first place to look. How many regions are in your system? Region Servers Address Start Code Load hadoop01

Re: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-23 Thread Himanshu Vashishtha
Are you doing some intensive tasks at the RegionServer side (which takes more than default time out of, 60 sec - iirc)? One can get these exception when client side socket connection is closed (probably a time out from client side). As per the exception, when RegionServer tried to send the result

RE: how to make tuning for hbase (every couple of days hbase region sever/s crashe)

2011-08-23 Thread Michael Segel
I won't say you're crazy but .5 GB per mapper? I would say tune conservatively like you are suggesting 1GB for OS, but also I'd suggest tuning to 80% utilization instead of 100% utilization. From: buttl...@llnl.gov To: user@hbase.apache.org Date: Tue, 23 Aug 2011 16:35:22 -0700 Subject: