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ASF subversion and git services commented on KYLIN-4178: -------------------------------------------------------- Commit f6dfb6878220df6f00676af0cd1b63644e8d06fe in kylin's branch refs/heads/master from Zhou Kang [ https://gitbox.apache.org/repos/asf?p=kylin.git;h=f6dfb68 ] fix bug of KYLIN-4178 > Job scheduler support safe mode > -------------------------------- > > Key: KYLIN-4178 > URL: https://issues.apache.org/jira/browse/KYLIN-4178 > Project: Kylin > Issue Type: Improvement > Reporter: ZhouKang > Priority: Major > Fix For: v3.0.0 > > Attachments: image-2019-11-26-18-42-33-473.png > > > Job scheduler should support safe mode in case of the HBase cluster change. > In xiaomi, we want update the HBase cluster from hbase0.98 to HBase 2.0. The > history data can be migrated previously, but the job has been submitted will > keep running and write data to the old cluster. So we need a method to ensure > that, job create htable in the old cluster will write data to the old > cluster, and the job have not create htable should not be scheduled. > So we need job scheduler safe mode. Open safe mode before changing cluster > config, the running jobs can run continuous, and the new job cannot be > scheduled. > After all running job finished, we can change the cluster config to the new > one, and rest of job can be scheduled again. > -- This message was sent by Atlassian Jira (v8.3.4#803005)