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From Masf <masfwo...@gmail.com>
Subject Re: Too many open files
Date Mon, 30 Mar 2015 12:08:09 GMT
Hi.

I've done relogin, in fact, I put 'uname -n' and returns 1000000, but it
crashs.
I'm doing reduceByKey and SparkSQL mixed over 17 files (250MB-500MB/file)


Regards.
Miguel Angel.

On Mon, Mar 30, 2015 at 1:52 PM, Akhil Das <akhil@sigmoidanalytics.com>
wrote:

> Mostly, you will have to restart the machines to get the ulimit effect (or
> relogin). What operation are you doing? Are you doing too many
> repartitions?
>
> Thanks
> Best Regards
>
> On Mon, Mar 30, 2015 at 4:52 PM, Masf <masfworld@gmail.com> wrote:
>
>> Hi
>>
>> I have a problem with temp data in Spark. I have fixed
>> spark.shuffle.manager to "SORT". In /etc/secucity/limits.conf set the next
>> values:
>> *               soft    nofile  1000000
>> *               hard    nofile  1000000
>> In spark-env.sh set ulimit -n 1000000
>> I've restarted the spark service and it continues crashing (Too many open
>> files)
>>
>> How can I resolve? I'm executing Spark 1.2.0 in Cloudera 5.3.2
>>
>> java.io.FileNotFoundException:
>> /tmp/spark-local-20150330115312-37a7/2f/temp_shuffle_c4ba5bce-c516-4a2a-9e40-56121eb84a8c
>> (Too many open files)
>>         at java.io.FileOutputStream.open(Native Method)
>>         at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
>>         at
>> org.apache.spark.storage.DiskBlockObjectWriter.open(BlockObjectWriter.scala:123)
>>         at
>> org.apache.spark.util.collection.ExternalSorter$$anonfun$spillToPartitionFiles$1.apply(ExternalSorter.scala:360)
>>         at
>> org.apache.spark.util.collection.ExternalSorter$$anonfun$spillToPartitionFiles$1.apply(ExternalSorter.scala:355)
>>         at scala.Array$.fill(Array.scala:267)
>>         at
>> org.apache.spark.util.collection.ExternalSorter.spillToPartitionFiles(ExternalSorter.scala:355)
>>         at
>> org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:211)
>>         at
>> org.apache.spark.shuffle.sort.SortShuffleWriter.write(SortShuffleWriter.scala:65)
>>         at
>> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
>>         at
>> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
>>         at org.apache.spark.scheduler.Task.run(Task.scala:56)
>>         at
>> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
>>         at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>         at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>         at java.lang.Thread.run(Thread.java:745)
>> 15/03/30 11:54:18 WARN TaskSetManager: Lost task 22.0 in stage 3.0 (TID
>> 27, localhost): java.io.FileNotFoundException:
>> /tmp/spark-local-20150330115312-37a7/2f/temp_shuffle_c4ba5bce-c516-4a2a-9e40-56121eb84a8c
>> (Too many open files)
>>         at java.io.FileOutputStream.open(Native Method)
>>         at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
>>         at
>> org.apache.spark.storage.DiskBlockObjectWriter.open(BlockObjectWriter.scala:123)
>>         at
>> org.apache.spark.util.collection.ExternalSorter$$anonfun$spillToPartitionFiles$1.apply(ExternalSorter.scala:360)
>>         at
>> org.apache.spark.util.collection.ExternalSorter$$anonfun$spillToPartitionFiles$1.apply(ExternalSorter.scala:355)
>>         at scala.Array$.fill(Array.scala:267)
>>         at
>> org.apache.spark.util.collection.ExternalSorter.spillToPartitionFiles(ExternalSorter.scala:355)
>>         at
>> org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:211)
>>         at
>> org.apache.spark.shuffle.sort.SortShuffleWriter.write(SortShuffleWriter.scala:65)
>>         at
>> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
>>         at
>> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
>>         at org.apache.spark.scheduler.Task.run(Task.scala:56)
>>         at
>> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:196)
>>         at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>         at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>         at java.lang.Thread.run(Thread.java:745)
>>
>>
>>
>> Thanks!!!!!
>> --
>>
>>
>> Regards.
>> Miguel Ángel
>>
>
>


-- 


Saludos.
Miguel Ángel

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