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[ZEPPELIN-4673]. Add option to only allow yarn-cluster mode for spark interpreter #3697

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[ZEPPELIN-4673]. Add option to only allow yarn-cluster mode for spark interpreter #3697

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6 changes: 6 additions & 0 deletions conf/zeppelin-site.xml.template
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Expand Up @@ -718,4 +718,10 @@
Disable it can save lots of memory</description>
</property>

<property>
<name>zeppelin.spark.only_yarn_cluster</name>
<value>false</value>
<description>Whether only allow yarn cluster mode</description>
</property>

</configuration>
2 changes: 2 additions & 0 deletions docs/interpreter/spark.md
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Expand Up @@ -259,6 +259,8 @@ For the further information about Spark & Zeppelin version compatibility, please

> Note that without exporting `SPARK_HOME`, it's running in local mode with included version of Spark. The included version may vary depending on the build profile.

> Yarn client mode and local mode will run driver in the same machine with zeppelin server, this would be dangerous for production. Because it may run out of memory when there's many spark interpreters running at the same time. So we suggest you only allow yarn-cluster mode via setting `zeppelin.spark.only_yarn_cluster` in `zeppelin-site.xml`.

## SparkContext, SQLContext, SparkSession, ZeppelinContext

SparkContext, SQLContext, SparkSession (for spark 2.x) and ZeppelinContext are automatically created and exposed as variable names `sc`, `sqlContext`, `spark` and `z`, respectively, in Scala, Kotlin, Python and R environments.
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7 changes: 6 additions & 1 deletion zeppelin-interpreter/src/main/java/org/apache/zeppelin/conf/ZeppelinConfiguration.java
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Expand Up @@ -739,6 +739,10 @@ public String getZeppelinSearchIndexPath() {
return getRelativeDir(ConfVars.ZEPPELIN_SEARCH_INDEX_PATH);
}

public Boolean isOnlyYarnCluster() {
return getBoolean(ConfVars.ZEPPELIN_SPARK_ONLY_YARN_CLUSTER);
}

public String getClusterAddress() {
return getString(ConfVars.ZEPPELIN_CLUSTER_ADDR);
}
Expand Down Expand Up @@ -998,7 +1002,8 @@ public enum ConfVars {
ZEPPELIN_SEARCH_INDEX_REBUILD("zeppelin.search.index.rebuild", false),
ZEPPELIN_SEARCH_USE_DISK("zeppelin.search.use.disk", true),
ZEPPELIN_SEARCH_INDEX_PATH("zeppelin.search.index.path", "/tmp/zeppelin-index"),
ZEPPELIN_JOBMANAGER_ENABLE("zeppelin.jobmanager.enable", true);
ZEPPELIN_JOBMANAGER_ENABLE("zeppelin.jobmanager.enable", false),
ZEPPELIN_SPARK_ONLY_YARN_CLUSTER("zeppelin.spark.only_yarn_cluster", false);

private String varName;
@SuppressWarnings("rawtypes")
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4 changes: 4 additions & 0 deletions ...gine/src/main/java/org/apache/zeppelin/interpreter/launcher/SparkInterpreterLauncher.java
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Expand Up @@ -76,6 +76,10 @@ public Map<String, String> buildEnvFromProperties(InterpreterLaunchContext conte
if (isYarnMode() && getDeployMode().equals("cluster")) {
env.put("ZEPPELIN_SPARK_YARN_CLUSTER", "true");
sparkProperties.setProperty("spark.yarn.submit.waitAppCompletion", "false");
} else if (zConf.isOnlyYarnCluster()){
throw new IOException("Only yarn-cluster mode is allowed, please set " +
ZeppelinConfiguration.ConfVars.ZEPPELIN_SPARK_ONLY_YARN_CLUSTER.getVarName() +
" to false if you want to use other modes.");
}

StringBuilder sparkConfBuilder = new StringBuilder();
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