Using HDP 2.5.3 and I've been trying to debug some YARN container classpath issues.
Since HDP includes both Spark 1.6 and 2.0.0, there have been some conflicting versions
Users I support are successfully able to use Spark2 with Hive queries in YARN client mode, but not from cluster mode they get errors about tables not found, or something like that because the Metastore connection isn't established.
I am guessing that setting either --driver-class-path /etc/spark2/conf:/etc/hive/conf or passing --files /etc/spark2/conf/hive-site.xml after spark-submit would work, but why isn't hive-site.xml loaded already from the conf folder?
Accoringing to Hortonworks docs, says hive-site should be placed in $SPARK_HOME/conf, and it is...
I see hdfs-site.xml and core-site.xml, and other files that are part of HADOOP_CONF_DIR, for example, and this is the from the YARN UI container info.
2232355 4 drwx------ 2 yarn hadoop 4096 Aug 2 21:59 ./__spark_conf__
2232379 4 -r-x------ 1 yarn hadoop 2358 Aug 2 21:59 ./__spark_conf__/topology_script.py
2232381 8 -r-x------ 1 yarn hadoop 4676 Aug 2 21:59 ./__spark_conf__/yarn-env.sh
2232392 4 -r-x------ 1 yarn hadoop 569 Aug 2 21:59 ./__spark_conf__/topology_mappings.data
2232398 4 -r-x------ 1 yarn hadoop 945 Aug 2 21:59 ./__spark_conf__/taskcontroller.cfg
2232356 4 -r-x------ 1 yarn hadoop 620 Aug 2 21:59 ./__spark_conf__/log4j.properties
2232382 12 -r-x------ 1 yarn hadoop 8960 Aug 2 21:59 ./__spark_conf__/hdfs-site.xml
2232371 4 -r-x------ 1 yarn hadoop 2090 Aug 2 21:59 ./__spark_conf__/hadoop-metrics2.properties
2232387 4 -r-x------ 1 yarn hadoop 662 Aug 2 21:59 ./__spark_conf__/mapred-env.sh
2232390 4 -r-x------ 1 yarn hadoop 1308 Aug 2 21:59 ./__spark_conf__/hadoop-policy.xml
2232399 4 -r-x------ 1 yarn hadoop 1480 Aug 2 21:59 ./__spark_conf__/__spark_conf__.properties
2232389 4 -r-x------ 1 yarn hadoop 1602 Aug 2 21:59 ./__spark_conf__/health_check
2232385 4 -r-x------ 1 yarn hadoop 913 Aug 2 21:59 ./__spark_conf__/rack_topology.data
2232377 4 -r-x------ 1 yarn hadoop 1484 Aug 2 21:59 ./__spark_conf__/ranger-hdfs-audit.xml
2232383 4 -r-x------ 1 yarn hadoop 1020 Aug 2 21:59 ./__spark_conf__/commons-logging.properties
2232357 8 -r-x------ 1 yarn hadoop 5721 Aug 2 21:59 ./__spark_conf__/hadoop-env.sh
2232391 4 -r-x------ 1 yarn hadoop 281 Aug 2 21:59 ./__spark_conf__/slaves
2232373 8 -r-x------ 1 yarn hadoop 6407 Aug 2 21:59 ./__spark_conf__/core-site.xml
2232393 4 -r-x------ 1 yarn hadoop 812 Aug 2 21:59 ./__spark_conf__/rack-topology.sh
2232394 4 -r-x------ 1 yarn hadoop 1044 Aug 2 21:59 ./__spark_conf__/ranger-hdfs-security.xml
2232395 8 -r-x------ 1 yarn hadoop 4956 Aug 2 21:59 ./__spark_conf__/metrics.properties
2232386 8 -r-x------ 1 yarn hadoop 4221 Aug 2 21:59 ./__spark_conf__/task-log4j.properties
2232380 4 -r-x------ 1 yarn hadoop 64 Aug 2 21:59 ./__spark_conf__/ranger-security.xml
2232372 20 -r-x------ 1 yarn hadoop 19975 Aug 2 21:59 ./__spark_conf__/yarn-site.xml
2232397 4 -r-x------ 1 yarn hadoop 1006 Aug 2 21:59 ./__spark_conf__/ranger-policymgr-ssl.xml
2232374 4 -r-x------ 1 yarn hadoop 29 Aug 2 21:59 ./__spark_conf__/yarn.exclude
2232384 4 -r-x------ 1 yarn hadoop 1606 Aug 2 21:59 ./__spark_conf__/container-executor.cfg
2232396 4 -r-x------ 1 yarn hadoop 1000 Aug 2 21:59 ./__spark_conf__/ssl-server.xml
2232375 4 -r-x------ 1 yarn hadoop 1 Aug 2 21:59 ./__spark_conf__/dfs.exclude
2232359 8 -r-x------ 1 yarn hadoop 7660 Aug 2 21:59 ./__spark_conf__/mapred-site.xml
2232378 16 -r-x------ 1 yarn hadoop 14474 Aug 2 21:59 ./__spark_conf__/capacity-scheduler.xml
2232376 4 -r-x------ 1 yarn hadoop 884 Aug 2 21:59 ./__spark_conf__/ssl-client.xml
As you might see, hive-site is not there, even though I definitely have conf/hive-site.xml for spark-submit to take
[spark@asthad006 conf]$ pwd && ls -l
/usr/hdp/2.5.3.0-37/spark2/conf
total 32
-rw-r--r-- 1 spark spark 742 Mar 6 15:20 hive-site.xml
-rw-r--r-- 1 spark spark 620 Mar 6 15:20 log4j.properties
-rw-r--r-- 1 spark spark 4956 Mar 6 15:20 metrics.properties
-rw-r--r-- 1 spark spark 824 Aug 2 22:24 spark-defaults.conf
-rw-r--r-- 1 spark spark 1820 Aug 2 22:24 spark-env.sh
-rwxr-xr-x 1 spark spark 244 Mar 6 15:20 spark-thrift-fairscheduler.xml
-rw-r--r-- 1 hive hadoop 918 Aug 2 22:24 spark-thrift-sparkconf.conf
So, I don't think I am supposed to place hive-site in HADOOP_CONF_DIR as HIVE_CONF_DIR is separated, but my question is that how do we get Spark2 to pick up the hive-site.xml without needing to manually pass it as a parameter at runtime?
EDIT Naturally, since I'm on HDP I am using Ambari. The previous cluster admin has installed Spark2 clients on all of the machines, so all of the YARN NodeManagers that could be potential Spark drivers should have the same config files
You can use spark property - spark.yarn.dist.files and specify path to hive-site.xml there.