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  • 给hive的metastore做JVM优化

    最近在测试环境下,hive的metastore不稳定,于是做一次JVM优化

    在hive-env.sh中

    export HADOOP_HOME=/opt/cdh/hadoop-2.6.0-cdh5.14.0

    if [ "$SERVICE" = "cli" ]; then
    if [ -z "$DEBUG" ]; then
    export HADOOP_OPTS="$HADOOP_OPTS -XX:NewRatio=12 -Xmx2048m -Xms2048m -XX:MaxHeapFreeRatio=40 -XX:MinHeapFreeRatio=15 -XX:-UseGCOverheadLimit -verbose:gc -Xloggc:/opt/cdh/hive-1.1.0-cdh5.14.0/hivemeta.gc.log -XX:ErrorFile=/opt/cdh/hive-1.1.0-cdh5.14.0/hs_err_pid.log -XX:+UseParNewGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+HeapDumpOnOutOfMemoryError -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=85 -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:SurvivorRatio=4 -XX:CMSMaxAbortablePrecleanTime=1000 -XX:+CMSClassUnloadingEnabled -XX:+DisableExplicitGC" -XX:-UseGCOverheadLimit"
    else
    export HADOOP_OPTS="$HADOOP_OPTS -XX:NewRatio=12 -Xmx2048m -Xms2048m -XX:MaxHeapFreeRatio=40 -XX:MinHeapFreeRatio=15 -XX:-UseGCOverheadLimit -verbose:gc -Xloggc:/opt/cdh/hive-1.1.0-cdh5.14.0/hivemeta.gc.log -XX:ErrorFile=/opt/cdh/hive-1.1.0-cdh5.14.0/hs_err_pid.log -XX:+UseParNewGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+HeapDumpOnOutOfMemoryError -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=85 -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:SurvivorRatio=4 -XX:CMSMaxAbortablePrecleanTime=1000 -XX:+CMSClassUnloadingEnabled -XX:+DisableExplicitGC" -XX:-UseGCOverheadLimit"
    fi
    fi

    export HADOOP_HEAPSIZE=4096

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  • 原文地址:https://www.cnblogs.com/niutao/p/10791825.html
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