Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/2145#discussion_r16746707
--- Diff: sbin/mesos-pyenv.sh ---
@@ -17,10 +17,10 @@
# limitations under the License.
#
+#
+# This script is only used for fine grained Mesos executors
+
FWDIR="$(cd `dirname $0`/..; pwd)"
export PYTHONPATH=$FWDIR/python:$PYTHONPATH
export PYTHONPATH=$FWDIR/python/lib/py4j-0.8.2.1-src.zip:$PYTHONPATH
-
-echo "Running spark-executor with framework dir = $FWDIR"
-exec $FWDIR/bin/spark-class org.apache.spark.executor.MesosExecutorBackend
--- End diff --
But `sparkHome` is driver side Spark home directory, which can't be used on
driver side to assemble the Mesos executor side command line. On the other
side, `sbin/mesos-pyenv.sh` is always executed on Mesos executor side, thus
`$FWDIR` always points to the right position.
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