-1 Region server did not restart after ZK timeout. Entered a high stress period while compacting under heavy write load, high RAM commitment, and concurrency.
This is a stress test and I need to tune down vm.swappiness some more, but the region server shut down and did not restart. See attached. - Andy ________________________________ From: stack <st...@duboce.net> To: hbase-dev@hadoop.apache.org; hbase-u...@hadoop.apache.org Sent: Wednesday, July 29, 2009 5:31:31 PM Subject: ANN: hbase 0.20.0 Release Candidate 1 available for download The first hbase 0.20.0 release candidate is available for download: http://people.apache.org/~stack/hbase-0.20.0-candidate-1/<http://people.apache.org/%7Estack/hbase-0.19.0-candidate-1/> More than 400 issues have been addressed. The release notes are available here: http://su.pr/18zcEO <http://tinyurl.com/8xmyx9>. HBase 0.20.0 runs on Hadoop 0.20.0. Alot has changed since 0.19.x including configuration fundamentals. Be sure to read the 'Getting Started' documentation available here: http://su.pr/211OYP.<http://people.apache.org/%7Estack/hbase-0.19.0-candidate-1/> If you wish to bring your 0.19.x hbase data forward to 0.20.0, you will need to run a migration. See http://wiki.apache.org/hadoop/Hbase/HowToMigrate. First read the overview and then go to the section, 'From 0.19.x to 0.20.x'. Should we release this candidate as hbase 0.20.0? Please vote +1/-1 by Monday August 3rd. Yours, The HBasistas P.S. 0.20.0 Highlights include: + Much improved performance + Master is no longer SPOF + Rolling restarts -- no need to take down whole cluster updating config. or making minor upgrades + A new, more comprehensive API (The old API is still present but deprecated) + Improved mapreduce connectors + New contrib package with updated Transactional HBase (THBase) and Indexed HBase (ITHBase) as well as a new REST gateway called stargate + And, as they say on the radio, "much, much more".
