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Heng Chen commented on HBASE-15128: ----------------------------------- Patch v7 make Admin.MasterSwitchType to be Evolving and fix java checkstyle and relates ruby script style. Now, * relates test has passed, https://builds.apache.org/job/PreCommit-HBASE-Build/612/testReport/org.apache.hadoop.hbase.client/TestSplitOrMergeStatus/ * Java check style errors have no relates with this patch, Method length has exceed limit already. * about ruby style errors, i have fixed relates scripts. Now, the left is due to unreasonable constraints of ruby checkstyle rules, i have send email to dev list, [~busbey] give some suggestions, we should make project specific configuration of rubocop. http://mail-archives.apache.org/mod_mbox/hbase-dev/201602.mbox/%3CCAGHyZ6Jm2etYpW4dS35pCFLgJ1%2B%2BU-_uPz8fhZpzoMVcTYrpVQ%40mail.gmail.com%3E Any other suggestions? > Disable region splits and merges switch in master > ------------------------------------------------- > > Key: HBASE-15128 > URL: https://issues.apache.org/jira/browse/HBASE-15128 > Project: HBase > Issue Type: Bug > Reporter: Enis Soztutar > Assignee: Heng Chen > Fix For: 2.0.0, 1.3.0 > > Attachments: HBASE-15128.patch, HBASE-15128_v1.patch, > HBASE-15128_v3.patch, HBASE-15128_v5.patch, HBASE-15128_v6.patch, > HBASE-15128_v7.patch > > > In large clusters where region splits are frequent, and HBCK runs take > longer, the concurrent splits cause further problems in HBCK since HBCK > assumes a static state for the region partition map. We have just seen a case > where HBCK undo's a concurrently splitting region causing number of > inconsistencies to go up. > We can have a mode in master where splits and merges are disabled like the > balancer and catalog janitor switches. Master will reject the split requests > if regionservers decide to split. This switch can be turned on / off by the > admins and also automatically by HBCK while it is running (similar to > balancer switch being disabled by HBCK). > HBCK should also disable the Catalog Janitor just in case. -- This message was sent by Atlassian JIRA (v6.3.4#6332)