[ https://issues.apache.org/jira/browse/HADOOP-10950?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Allen Wittenauer updated HADOOP-10950: -------------------------------------- Release Note: * HADOOP_HEAPSIZE variable has been deprecated (It will still be honored if set, but expect it to go away in the future). In its place, HADOOP_HEAPSIZE_MAX and HADOOP_HEAPSIZE_MIN have been introduced to set Xmx and Xms, respectively. * The internal variable JAVA_HEAP_MAX has been removed. * Default heap sizes have been removed. To re-enable the old default, configure HADOOP_HEAPSIZE_MAX="1g" in hadoop-env.sh. This will allow for the JVM to use auto-tuning based upon the memory size of the host. * All global and daemon-specific heap size variables now support units. If the variable is only a number, the size is assumed to be in megabytes. was: * The default heap sizes have been removed and the HADOOP_HEAPSIZE variable has been deprecated (It will still be honored if set, but expect it to go away in the future). This will allow for the JVM to use auto-tuning based upon the memory size of the host. To re-enable the old default, configure HADOOP_HEAPSIZE_MAX="1g" in hadoop-env.sh. * All global and daemon-specific heap size variables now support units. If the variable is only a number, the size is assumed to be in megabytes. > rework heap management vars > ----------------------------- > > Key: HADOOP-10950 > URL: https://issues.apache.org/jira/browse/HADOOP-10950 > Project: Hadoop Common > Issue Type: Improvement > Components: scripts > Reporter: Allen Wittenauer > Assignee: Allen Wittenauer > Labels: scripts > Attachments: HADOOP-10950-01.patch, HADOOP-10950-02.patch, > HADOOP-10950.patch > > > Post-HADOOP-9902, we need to rework how heap is configured for small > footprint machines, deprecate some options, introduce new ones for greater > flexibility. -- This message was sent by Atlassian JIRA (v6.3.4#6332)