Given the fact that Spark is in memory processing and Hadoop is more to do with Disk based processing (higher disk I/O), I was wondering for sizing the containers and RAM needs, do we need more RAM for running same use case with Spark when compared to Hadoop Map-Reduce? ... View more

Hi folks, One of the requirements is to redirect the all kind of logs/ ranger logs/access logs and also other component's logs to external file system. Probably on NFS and not on HDFS or in the DB. Does HDP provide out of the box solution for this? One workaround I can think of using Flume but wanted to know other approaches? Regards, DP ... View more

Hi folks, I am trying to run the spark PI example on the Hortonworks cluster. I could run this successfully in the local mode and in the yarn client mode . When I try to run it using YARN cluster mode I do not see any out put or error. I am not sure if it is running or is there a bug. Can you please help me understand this behavior? Here are the commands I am trying to use. spark-submit --class org.apache.spark.examples.SparkPi --master yarn --deploy-mode cluster ../lib/spark-examples*.jar 10 Also tried with spark-submit --class org.apache.spark.examples.SparkPi --master yarn-cluster ../lib/spark-examples*.jar 10 (One more question are above both correct ?) Both the times I see the following console log but not the PI value. ( When I run in local mode or yarn-client mode I see the value of PI printed on the console) 16/02/11 11:06:05 WARN Client: spark.yarn.am.extraJavaOptions will not take effect in cluster mode 16/02/11 11:06:05 INFO SecurityManager: Changing view acls to: username 16/02/11 11:06:05 INFO SecurityManager: Changing modify acls to: username 16/02/11 11:06:05 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(username); users with modify permissions: Set(username) 16/02/11 11:06:06 INFO Client: Submitting application 432 to ResourceManager 16/02/11 11:06:06 INFO YarnClientImpl: Submitted application application_1454617624671_0432 16/02/11 11:06:07 INFO Client: Application report for application_1454617624671_0432 (state: ACCEPTED) 16/02/11 11:06:07 INFO Client: client token: N/A diagnostics: N/A ApplicationMaster host: N/A ApplicationMaster RPC port: -1 queue: default start time: 1455188766121 final status: UNDEFINED tracking URL: http://SomeIP:8088/proxy/application_1454617624671_0432/ user: username .............. 16/02/11 11:06:23 INFO Client: Application report for application_1454617624671_0432 (state: FINISHED) 16/02/11 11:06:23 INFO Client: client token: N/A diagnostics: N/A ApplicationMaster host: APP_Master_host_IP ApplicationMaster RPC port: 0 queue: default start time: 1455188766121 final status: SUCCEEDED tracking URL: http://SomeIP:8088/proxy/application_1454617624671_0432/ user: username 16/02/11 11:06:23 INFO ShutdownHookManager: Shutdown hook called 16/02/11 11:06:23 INFO ShutdownHookManager: Deleting directory /tmp/spark-54dc94ab-cf66-4d17-9940-1c31ba7e9850 [username@remoteIP bin]$ ... View more