Re: spark-local dir running out of space during long ALS run

2015-02-16 Thread Tathagata Das
Correct, brute force clean up is not useful. Since Spark 1.0, Spark can do automatic cleanup of files based on which RDDs are used/garbage collected by JVM. That would be the best way, but depends on the JVM GC characteristics. If you force a GC periodically in the driver that might help you get

Re: spark-local dir running out of space during long ALS run

2015-02-16 Thread Davies Liu
For the last question, you can trigger GC in JVM from Python by : sc._jvm.System.gc() On Mon, Feb 16, 2015 at 4:08 PM, Antony Mayi antonym...@yahoo.com.invalid wrote: thanks, that looks promissing but can't find any reference giving me more details - can you please point me to something? Also

Re: spark-local dir running out of space during long ALS run

2015-02-16 Thread Antony Mayi
thanks, that looks promissing but can't find any reference giving me more details - can you please point me to something? Also is it possible to force GC from pyspark (as I am using pyspark)? thanks,Antony. On Monday, 16 February 2015, 21:05, Tathagata Das tathagata.das1...@gmail.com

Re: spark-local dir running out of space during long ALS run

2015-02-16 Thread Antony Mayi
spark.cleaner.ttl is not the right way - seems to be really designed for streaming. although it keeps the disk usage under control it also causes loss of rdds and broadcasts that are required later leading to crash. is there any other way?thanks,Antony. On Sunday, 15 February 2015, 21:42,

spark-local dir running out of space during long ALS run

2015-02-15 Thread Antony Mayi
Hi, I am running bigger ALS on spark 1.2.0 on yarn (cdh 5.3.0) - ALS is using about 3 billions of ratings and I am doing several trainImplicit() runs in loop within one spark session. I have four node cluster with 3TB disk space on each. before starting the job there is less then 8% of the disk

Re: spark-local dir running out of space during long ALS run

2015-02-15 Thread Antony Mayi
spark.cleaner.ttl ? On Sunday, 15 February 2015, 18:23, Antony Mayi antonym...@yahoo.com wrote: Hi, I am running bigger ALS on spark 1.2.0 on yarn (cdh 5.3.0) - ALS is using about 3 billions of ratings and I am doing several trainImplicit() runs in loop within one spark session.