Github user jongyoul commented on the pull request: https://github.com/apache/spark/pull/5063#issuecomment-85920174 @tnachen @elyast I've updated it to support fractional number of cores for executors. Please review this PR. I've tested my cluster. My setting is ``` AVA_HOME=/app/jdk HADOOP_HOME=/app/hdfs HADOOP_CONF_DIR=/app/hdfs/conf MESOS_NATIVE_JAVA_LIBRARY=/app/mesos-0.21.0/lib/libmesos.so SPARK_EXECUTOR_MEMORY=5G spark-1.4.0-SNAPSHOT-bin-2.5.0-cdh5.3.0/bin/spark-shell --master mesos://zk://dicc-m001:2181,dicc-m002:2181,dicc-m003:2181/mesos-0.21.0 --conf spark.executor.uri=hdfs:///app/spark/spark-1.4.0-SNAPSHOT-bin-2.5.0-cdh5.3.0.tgz --conf spark.io.compression.codec=lzf --conf spark.task.cpus=5 --conf spark.mesos.executor.cores=0.1 ```
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