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  1. ZooKeeper
  2. ZOOKEEPER-2837

Add a special START_SERVER_JVMFLAGS option only for `start` command to distinguish JVMFLAGS and SERVER_JVMFLAGS

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 3.5.3
    • Fix Version/s: None
    • Component/s: server

      Description

      Add a special START_SERVER_JVMFLAGS option only for `start` command to distinguish JVMFLAGS and SERVER_JVMFLAGS.

      If we use the normal way to add JVM options with `JVMFLAGS` in `conf/java.env`, then it will effect almost all shell scripts under `bin` directory. Even if using `SERVER_JVMFLAGS` will effect some commands like `zkServer.sh status`, include four-letters commands.

      For example, if the JVMFLAGS is
      ```bash
      export JVMFLAGS="-Xms3G -Xmx3G -Xmn1G -XX:AlwaysPreTouch -XX:CMSInitiatingOccupancyFraction=70 -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+PrintGCDetails -XX:-PrintGCTimeStamps -Xloggc:/home/zookeeper/logs/zookeeper_`date '%Y%m%d%H%M%S'`.gc -XX:-UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=64M"
      ```
      then we will get too many GC log files due to using the `mntr` four-letters command regularly in some monitor situation.
      ```bash
      $ ls ~/logs
      zookeeper_20170704175942.gc
      zookeeper_20170704180101.gc
      zookeeper_20170704180201.gc
      zookeeper_20170704180301.gc
      zookeeper_20170704180401.gc
      ...
      ```

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            • Assignee:
              benedict jin Benedict Jin
              Reporter:
              benedict jin Benedict Jin
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                Updated:
                Resolved:

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