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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-22184) GraphX fails in case of insufficient memory and checkpoints enabled
Date Mon, 02 Oct 2017 14:44:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-22184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved SPARK-22184.
-------------------------------
    Resolution: Duplicate

This is just a special case of the other item you opened

> GraphX fails in case of insufficient memory and checkpoints enabled
> -------------------------------------------------------------------
>
>                 Key: SPARK-22184
>                 URL: https://issues.apache.org/jira/browse/SPARK-22184
>             Project: Spark
>          Issue Type: Bug
>          Components: GraphX
>    Affects Versions: 2.2.0
>         Environment: spark 2.2.0
> scala 2.11
>            Reporter: Sergey Zhemzhitsky
>
> GraphX fails with FileNotFoundException in case of insufficient memory when checkpoints
are enabled.
> Here is the stacktrace 
> {code}
> Job aborted due to stage failure: Task creation failed: java.io.FileNotFoundException:
File file:/tmp/spark-90119695-a126-47b5-b047-d656fee10c17/9b16e2a9-6c80-45eb-8736-bbb6eb840146/rdd-28/part-00000
does not exist
> java.io.FileNotFoundException: File file:/tmp/spark-90119695-a126-47b5-b047-d656fee10c17/9b16e2a9-6c80-45eb-8736-bbb6eb840146/rdd-28/part-00000
does not exist
> 	at org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:539)
> 	at org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:752)
> 	at org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:529)
> 	at org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:409)
> 	at org.apache.spark.rdd.ReliableCheckpointRDD.getPreferredLocations(ReliableCheckpointRDD.scala:89)
> 	at org.apache.spark.rdd.RDD$$anonfun$preferredLocations$1.apply(RDD.scala:274)
> 	at org.apache.spark.rdd.RDD$$anonfun$preferredLocations$1.apply(RDD.scala:274)
> 	at scala.Option.map(Option.scala:146)
> 	at org.apache.spark.rdd.RDD.preferredLocations(RDD.scala:274)
> 	at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$getPreferredLocsInternal(DAGScheduler.scala:1697)
> ...
> {code}
> As GraphX uses cached RDDs intensively, the issue is only reproducible when previously
cached and checkpointed Vertex and Edge RDDs are evicted from memory and forced to be read
from disk. 
> For testing purposes the following parameters may be set to emulate low memory environment
> {code}
> val sparkConf = new SparkConf()
>   .set("spark.graphx.pregel.checkpointInterval", "2")
>   // set testing memory to evict cached RDDs from it and force
>   // reading checkpointed RDDs from disk
>   .set("spark.testing.reservedMemory", "128")
>   .set("spark.testing.memory", "256")
> {code}
> This issue also includes SPARK-22150 and cannot be fixed until SPARK-22150 is fixed too.



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