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Mike Drob edited comment on HBASE-17919 at 7/13/17 6:18 PM: ------------------------------------------------------------ Possibly relevant for a release note, or a casual warning to future test debuggers. DFSMiniClluster changed some behavior going into hadoop3 where it will clear all of it's own shutdown hooks. If a Mini DFS cluster is shut down in the same JVM before any RegionServers/HMasters have started then the RS will be unable to suppress the shutdown hooks and will fail during startup (because those hooks no longer exist). This was discovered while investigating HBASE-17922 was (Author: mdrob): DFSMiniClluster changed some behavior going into hadoop3 where it will clear all of it's own shutdown hooks. If a Mini DFS cluster is shut down in the same JVM before any RegionServers/HMasters have started then the RS will be unable to suppress the shutdown hooks and will fail during startup (because those hooks no longer exist). This was discovered while investigating HBASE-17922 > HBase 2.x over hadoop 3.x umbrella > ----------------------------------- > > Key: HBASE-17919 > URL: https://issues.apache.org/jira/browse/HBASE-17919 > Project: HBase > Issue Type: Umbrella > Components: hadoop3 > Affects Versions: 2.0.0 > Reporter: Jonathan Hsieh > > We should try to get hbase 2.x branch working against the recently release > hadoop 3.0.0 alphas. These days 3.0.0-alpha2 is the latest. > HBASE-16733 and HBASE-17593 got the compile level checks in but we should > progress to getting unit tests to pass and a build against hadoop3 up. > This umbrella issue will capture issues around this project. -- This message was sent by Atlassian JIRA (v6.4.14#64029)