Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/20192#discussion_r160316799
--- Diff:
resource-managers/kubernetes/docker/src/main/dockerfiles/spark/entrypoint.sh ---
@@ -0,0 +1,97 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# echo commands to the terminal output
+set -ex
+
+# Check whether there is a passwd entry for the container UID
+myuid=$(id -u)
+mygid=$(id -g)
+uidentry=$(getent passwd $myuid)
+
+# If there is no passwd entry for the container UID, attempt to create one
+if [ -z "$uidentry" ] ; then
+ if [ -w /etc/passwd ] ; then
+ echo "$myuid:x:$myuid:$mygid:anonymous uid:$SPARK_HOME:/bin/false"
>> /etc/passwd
+ else
+ echo "Container ENTRYPOINT failed to add passwd entry for
anonymous UID"
+ fi
+fi
+
+SPARK_K8S_CMD="$1"
+if [ -z "$SPARK_K8S_CMD" ]; then
+ echo "No command to execute has been provided." 1>&2
+ exit 1
+fi
+shift 1
+
+SPARK_CLASSPATH="$SPARK_CLASSPATH:${SPARK_HOME}/jars/*"
+env | grep SPARK_JAVA_OPT_ | sed 's/[^=]*=\(.*\)/\1/g' > /tmp/java_opts.txt
+readarray -t SPARK_DRIVER_JAVA_OPTS < /tmp/java_opts.txt
+if [ -n "$SPARK_MOUNTED_CLASSPATH" ]; then
+ SPARK_CLASSPATH="$SPARK_CLASSPATH:$SPARK_MOUNTED_CLASSPATH"
+fi
+if [ -n "$SPARK_MOUNTED_FILES_DIR" ]; then
+ cp -R "$SPARK_MOUNTED_FILES_DIR/." .
+fi
+
+case "$SPARK_K8S_CMD" in
+ driver)
+ CMD=(
+ ${JAVA_HOME}/bin/java
+ "${SPARK_DRIVER_JAVA_OPTS[@]}"
+ -cp "$SPARK_CLASSPATH"
+ -Xms$SPARK_DRIVER_MEMORY
+ -Xmx$SPARK_DRIVER_MEMORY
+ -Dspark.driver.bindAddress=$SPARK_DRIVER_BIND_ADDRESS
+ $SPARK_DRIVER_CLASS
+ $SPARK_DRIVER_ARGS
+ )
+ ;;
+
+ executor)
+ CMD=(
+ ${JAVA_HOME}/bin/java
+ "${SPARK_EXECUTOR_JAVA_OPTS[@]}"
+ -Xms$SPARK_EXECUTOR_MEMORY
+ -Xmx$SPARK_EXECUTOR_MEMORY
+ -cp "$SPARK_CLASSPATH"
+ org.apache.spark.executor.CoarseGrainedExecutorBackend
+ --driver-url $SPARK_DRIVER_URL
+ --executor-id $SPARK_EXECUTOR_ID
+ --cores $SPARK_EXECUTOR_CORES
+ --app-id $SPARK_APPLICATION_ID
+ --hostname $SPARK_EXECUTOR_POD_IP
+ )
+ ;;
+
+ init)
+ CMD=(
+ "/opt/spark/bin/spark-class"
--- End diff --
shouldn't this be under `SPARK_HOME`?
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