[
https://issues.apache.org/jira/browse/MNEMONIC-399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16248268#comment-16248268
]
Wang, Gang edited comment on MNEMONIC-399 at 11/11/17 1:47 AM:
---------------------------------------------------------------
This bug loos have been fixed, need to be further verified by bigger datasets
The reason looks that the HadoopRDD's iterator cannot be exhausted inside of
RDD.compute() aggressively.
was (Author: qichfan):
This bug loos have been fixed, need to be further verified by bigger datasets
The reason looks that the HadoopRDD's iterator cannot be exhausted inside of
RDD.compute()
> Hadoop.fs thrown Bad file descriptor exception
> -----------------------------------------------
>
> Key: MNEMONIC-399
> URL: https://issues.apache.org/jira/browse/MNEMONIC-399
> Project: Mnemonic
> Issue Type: Bug
> Components: Spark-Integration
> Affects Versions: 0.10.0-incubating
> Reporter: Wang, Gang
> Assignee: Wang, Gang
>
> The implementation of DurableRDD causes the following exception when the
> number of RDD partitions is greater than 8 according to my tests, it is not
> clear what the root cause for this issue.
> {quote}
> org.apache.hadoop.fs.FSError: java.io.IOException: Bad file descriptor
> at
> org.apache.hadoop.fs.RawLocalFileSystem$LocalFSFileInputStream.read(RawLocalFileSystem.java:161)
> at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
> at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
> at java.io.DataInputStream.read(DataInputStream.java:149)
> at
> org.apache.hadoop.fs.FSInputChecker.readFully(FSInputChecker.java:436)
> at
> org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.readChunk(ChecksumFileSystem.java:257)
> at
> org.apache.hadoop.fs.FSInputChecker.readChecksumChunk(FSInputChecker.java:276)
> at org.apache.hadoop.fs.FSInputChecker.read1(FSInputChecker.java:228)
> at org.apache.hadoop.fs.FSInputChecker.read(FSInputChecker.java:196)
> at java.io.DataInputStream.read(DataInputStream.java:149)
> at
> org.apache.hadoop.mapreduce.lib.input.UncompressedSplitLineReader.fillBuffer(UncompressedSplitLineReader.java:62)
> at
> org.apache.hadoop.util.LineReader.readDefaultLine(LineReader.java:216)
> at org.apache.hadoop.util.LineReader.readLine(LineReader.java:174)
> at
> org.apache.hadoop.mapreduce.lib.input.UncompressedSplitLineReader.readLine(UncompressedSplitLineReader.java:94)
> at
> org.apache.hadoop.mapred.LineRecordReader.next(LineRecordReader.java:248)
> at
> org.apache.hadoop.mapred.LineRecordReader.next(LineRecordReader.java:48)
> at org.apache.spark.rdd.HadoopRDD$$anon$1.getNext(HadoopRDD.scala:277)
> at org.apache.spark.rdd.HadoopRDD$$anon$1.getNext(HadoopRDD.scala:214)
> at org.apache.spark.util.NextIterator.hasNext(NextIterator.scala:73)
> at
> org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at scala.collection.Iterator$class.foreach(Iterator.scala:893)
> at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)
> at
> org.apache.mnemonic.spark.rdd.DurableRDD$.prepareDurablePartition(DurableRDD.scala:226)
> at
> org.apache.mnemonic.spark.rdd.DurableRDD.compute(DurableRDD.scala:88)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
> at
> org.apache.spark.rdd.ZippedPartitionsRDD2.compute(ZippedPartitionsRDD.scala:89)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
> at
> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324)
> at org.apache.spark.rdd.RDD.iterator(RDD.scala:288)
> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
> at org.apache.spark.scheduler.Task.run(Task.scala:108)
> at
> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:345)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.io.IOException: Bad file descriptor
> at java.io.FileInputStream.readBytes(Native Method)
> at java.io.FileInputStream.read(FileInputStream.java:255)
> at
> org.apache.hadoop.fs.RawLocalFileSystem$LocalFSFileInputStream.read(RawLocalFileSystem.java:154)
> ... 41 more
> {quote}
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
