usage of -XX:+UseParallelGC in hadoop datanodes












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I read in https://hadoop.apache.org/docs/r2.8.4/hadoop-project-dist/hadoop-common/ClusterSetup.html that is possible to use -XX:+UseParallelGC in namenode, but what about datanodes? Is it correct to add -XX:+UseParallelGC in datanodes too through following istruction in hadoop-env.sh ?



export HADOOP_DATANODE_OPTS="-XX:+UseParallelGC $HADOOP_DATANODE_OPTS"









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    I read in https://hadoop.apache.org/docs/r2.8.4/hadoop-project-dist/hadoop-common/ClusterSetup.html that is possible to use -XX:+UseParallelGC in namenode, but what about datanodes? Is it correct to add -XX:+UseParallelGC in datanodes too through following istruction in hadoop-env.sh ?



    export HADOOP_DATANODE_OPTS="-XX:+UseParallelGC $HADOOP_DATANODE_OPTS"









    share|improve this question



























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      I read in https://hadoop.apache.org/docs/r2.8.4/hadoop-project-dist/hadoop-common/ClusterSetup.html that is possible to use -XX:+UseParallelGC in namenode, but what about datanodes? Is it correct to add -XX:+UseParallelGC in datanodes too through following istruction in hadoop-env.sh ?



      export HADOOP_DATANODE_OPTS="-XX:+UseParallelGC $HADOOP_DATANODE_OPTS"









      share|improve this question
















      I read in https://hadoop.apache.org/docs/r2.8.4/hadoop-project-dist/hadoop-common/ClusterSetup.html that is possible to use -XX:+UseParallelGC in namenode, but what about datanodes? Is it correct to add -XX:+UseParallelGC in datanodes too through following istruction in hadoop-env.sh ?



      export HADOOP_DATANODE_OPTS="-XX:+UseParallelGC $HADOOP_DATANODE_OPTS"






      hadoop garbage-collection






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      edited Nov 25 '18 at 13:07







      user35631

















      asked Nov 25 '18 at 13:02









      user35631user35631

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