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From "Fangyuan Deng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-18273) hbase_rotate_log in hbase script not working for some JDK
Date Tue, 27 Jun 2017 13:04:00 GMT
Fangyuan Deng created HBASE-18273:
-------------------------------------

             Summary: hbase_rotate_log in hbase script not working for some JDK
                 Key: HBASE-18273
                 URL: https://issues.apache.org/jira/browse/HBASE-18273
             Project: HBase
          Issue Type: Bug
          Components: hbase
    Affects Versions: 2.0.0-alpha-1, 1.1.11, 1.2.6
            Reporter: Fangyuan Deng
            Priority: Minor


When restarting a hbase process,  hbase_rotate_log $HBASE_LOGGC will rotate GC logs.
the code looks like this,

 if [ -f "$log" ]; then # rotate logs
    while [ $num -gt 1 ]; do
        prev=`expr $num - 1`
        [ -f "$log.$prev" ] && mv -f "$log.$prev" "$log.$num"
        num=$prev
    done

But, some version JDK will add a postfix .0 to the gc file, like hbase-xxx.gc.0,  rather than
hbase-xxx.gc.

So I add a check before rotate,

 if [ ! -f "$log" ]; then #for some jdk, gc log has a postfix 0
      if [ -f "$log.0" ]; then
        mv -f "$log.0" "$log";
      fi
    fi




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