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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-18143) [AMv2] Backoff on failed report of region transition quickly goes to astronomical time scale
Date Thu, 01 Jun 2017 04:54:04 GMT
stack created HBASE-18143:
-----------------------------

             Summary: [AMv2] Backoff on failed report of region transition quickly goes to
astronomical time scale
                 Key: HBASE-18143
                 URL: https://issues.apache.org/jira/browse/HBASE-18143
             Project: HBase
          Issue Type: Bug
          Components: Region Assignment
    Affects Versions: 2.0.0
            Reporter: stack
            Assignee: stack


Testing on cluster w/ aggressive killing, if Master is killed serially a few times such that
is offline a good while, regionservers that want to report a region transition pause too long
between retries.

Here is the regionserver reporting failures:
{code}
  1 2017-05-31 20:50:53,840 INFO  [RS_CLOSE_REGION-ve0542:16020-2] regionserver.HRegionServer:
Failed report of region transition server { host_name: "ve0542.halxg.cloudera.com" port: 16020
start_code: 1496279470954 } transition { transition_code: CLOSED region_info { region_id:
1496284931226 table_name { namesp    ace: "default" qualifier: "IntegrationTestBigLinkedList"
} start_key: "\337\377\377\377\377\377\377\362" end_key: "\352\252\252\252\252\252\252\234"
offline: false split: false replica_id: 0 } }; retry (#0) after 1008ms delay (Master is coming
online...).
  2 2017-05-31 20:50:54,853 INFO  [RS_CLOSE_REGION-ve0542:16020-2] regionserver.HRegionServer:
Failed report of region transition server { host_name: "ve0542.halxg.cloudera.com" port: 16020
start_code: 1496279470954 } transition { transition_code: CLOSED region_info { region_id:
1496284931226 table_name { namesp    ace: "default" qualifier: "IntegrationTestBigLinkedList"
} start_key: "\337\377\377\377\377\377\377\362" end_key: "\352\252\252\252\252\252\252\234"
offline: false split: false replica_id: 0 } }; retry (#1) after 2026ms delay (Master is coming
online...).
  3 2017-05-31 20:50:56,886 INFO  [RS_CLOSE_REGION-ve0542:16020-2] regionserver.HRegionServer:
Failed report of region transition server { host_name: "ve0542.halxg.cloudera.com" port: 16020
start_code: 1496279470954 } transition { transition_code: CLOSED region_info { region_id:
1496284931226 table_name { namesp    ace: "default" qualifier: "IntegrationTestBigLinkedList"
} start_key: "\337\377\377\377\377\377\377\362" end_key: "\352\252\252\252\252\252\252\234"
offline: false split: false replica_id: 0 } }; retry (#2) after 6084ms delay (Master is coming
online...).
  4 2017-05-31 20:51:02,976 INFO  [RS_CLOSE_REGION-ve0542:16020-2] regionserver.HRegionServer:
Failed report of region transition server { host_name: "ve0542.halxg.cloudera.com" port: 16020
start_code: 1496279470954 } transition { transition_code: CLOSED region_info { region_id:
1496284931226 table_name { namesp    ace: "default" qualifier: "IntegrationTestBigLinkedList"
} start_key: "\337\377\377\377\377\377\377\362" end_key: "\352\252\252\252\252\252\252\234"
offline: false split: false replica_id: 0 } }; retry (#3) after 30588ms delay (Master is coming
online...).
  5 2017-05-31 20:51:33,570 INFO  [RS_CLOSE_REGION-ve0542:16020-2] regionserver.HRegionServer:
Failed report of region transition server { host_name: "ve0542.halxg.cloudera.com" port: 16020
start_code: 1496279470954 } transition { transition_code: CLOSED region_info { region_id:
1496284931226 table_name { namesp    ace: "default" qualifier: "IntegrationTestBigLinkedList"
} start_key: "\337\377\377\377\377\377\377\362" end_key: "\352\252\252\252\252\252\252\234"
offline: false split: false replica_id: 0 } }; retry (#4) after 308422ms delay (Master is
coming online...).
  6 2017-05-31 20:56:41,997 INFO  [RS_CLOSE_REGION-ve0542:16020-2] regionserver.HRegionServer:
Failed report of region transition server { host_name: "ve0542.halxg.cloudera.com" port: 16020
start_code: 1496279470954 } transition { transition_code: CLOSED region_info { region_id:
1496284931226 table_name { namesp    ace: "default" qualifier: "IntegrationTestBigLinkedList"
} start_key: "\337\377\377\377\377\377\377\362" end_key: "\352\252\252\252\252\252\252\234"
offline: false split: false replica_id: 0 } }; retry (#5) after 6171203ms delay (Master is
coming online...).
{code}

See how by the time we get to the 5th retry, we are waiting 100 minutes before we'll retry.
That is too long. Make retry happen more frequently. Data is offline until the close is successfully
reported.



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