Re: JVM memory dump.

2015-09-16 Thread Ted Yu
Pardon This one: https://confluence.atlassian.com/plugins/servlet/mobile#content/view/227416007 > On Sep 16, 2015, at 10:02 PM, Ted Yu wrote: > > Have you read this ? > http://spark.apache.org/community.html > > > >> On Sep 16, 2015, at 9:54 PM, James Teng wrote: >> >> HI All, >> >> >> f

Re: JVM memory dump.

2015-09-16 Thread Ted Yu
Have you read this ? http://spark.apache.org/community.html > On Sep 16, 2015, at 9:54 PM, James Teng wrote: > > HI All, > > > first i have to say sorry, because this topic is not closely related to hbase > but jvm. Does jvm support or we can take other approaches to let the jvm dump > its

JVM memory dump.

2015-09-16 Thread James Teng
HI All, first i have to say sorry, because this topic is not closely related to hbase but jvm. Does jvm support or we can take other approaches to let the jvm dump its memory when the process is being killed by OS due to the memory increment, which brings a threat to the system crash. we hav

Re: Multiwal performance with HBase 1.x

2015-09-16 Thread Vladimir Rodionov
Yes, sure you can pre-split tables to avoid splitting during test. You will need at least 200 regions with default max size 10GB and ConstantSizeRegionSplitPolicy. Its 70 regions per server. I would create 300 regions with default size, or 150 with double size to guarantee splitless run - it is up

Re: Multiwal performance with HBase 1.x

2015-09-16 Thread Jingcheng Du
Ted, I ran the tests several months ago, I can re-ran the cases again and share them. -- View this message in context: http://apache-hbase.679495.n3.nabble.com/Multiwal-performance-with-HBase-1-x-tp4074403p4074715.html Sent from the HBase User mailing list archive at Nabble.com.

Re: Multiwal performance with HBase 1.x

2015-09-16 Thread Jingcheng Du
Currently the capacity of disks in each node is only around 4TB, I have 3 nodes. so I am afraid 10TB is too much for them:) How about 1TB? Is region split okay during the test? Do you have suggestion how many regions we should pre-split or max region size with that data size to avoid the region spl

Re: [ANNOUNCE] Apache Gora 0.6.1 Release

2015-09-16 Thread Ted Yu
Is there plan to support HBase 1.x releases ? Cheers On Mon, Sep 14, 2015 at 11:26 PM, lewis john mcgibbney wrote: > Hi All, > > The Apache Gora team are pleased to announce the immediate availability of > Apache Gora 0.6.1. > > What is Gora? > Gora is a framework which provides an in-memory da

Re: Avoiding a full with user requests

2015-09-16 Thread Loïc Chanel
Thanks a lot ! Loïc CHANEL Engineering student at TELECOM Nancy Trainee at Worldline - Villeurbanne 2015-09-15 19:12 GMT+02:00 Anoop John : > See this > https://blogs.apache.org/hbase/entry/the_hbase_request_throttling_feature > > On Wed, Sep 9, 2015 at 3:16 PM, Loïc Chanel > wrote: > > > Hi al