[SPARK-29435] Spark 3 doesnt work with older shuffle service

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: Shuffle, Spark Core

Environment

Spark 3 from Sept 26, commit 8beb736a00b004f97de7fcdf9ff09388d80fc548
Spark 2.4.1 shuffle service in yarn

• Assignee: Sandeep Katta
• Reporter: koert kuipers
• Created: 10/Oct/19 22:44
• Updated: 17/May/20 18:30
• Resolved: 14/Oct/19 16:22

Description

SPARK-27665 introduced a change to the shuffle protocol. It also introduced a setting spark.shuffle.useOldFetchProtocol which would allow spark 3 to run with old shuffle service.

However i have not gotten that to work. I have been testing with Spark 3 master (from Sept 26) and shuffle service from Spark 2.4.1 in yarn.

The errors i see are for example on EMR:

Error occurred while fetching local blocks
java.nio.file.NoSuchFileException: /mnt1/yarn/usercache/hadoop/appcache/application_1570697024032_0058/blockmgr-d1d009b1-1c95-4e2a-9a71-0ff20078b9a8/38/shuffle_0_0_0.index

And on CDH5:

org.apache.spark.shuffle.FetchFailedException: /data/9/hadoop/nm/usercache/koert/appcache/application_1568061697664_8250/blockmgr-57f28014-cdf2-431e-8e11-447ba5c2b2f2/0b/shuffle_0_0_0.index
	at org.apache.spark.storage.ShuffleBlockFetcherIterator.throwFetchFailedException(ShuffleBlockFetcherIterator.scala:596)
	at org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:511)
	at org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:67)
	at org.apache.spark.util.CompletionIterator.next(CompletionIterator.scala:29)
	at scala.collection.Iterator$$anon$11.nextCur(Iterator.scala:484)
	at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:490)
	at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:458)
	at org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:31)
	at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37)
	at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:458)
	at scala.collection.Iterator$SliceIterator.hasNext(Iterator.scala:266)
	at org.apache.spark.sql.execution.SparkPlan.$anonfun$getByteArrayRdd$1(SparkPlan.scala:337)
	at org.apache.spark.rdd.RDD.$anonfun$mapPartitionsInternal$2(RDD.scala:850)
	at org.apache.spark.rdd.RDD.$anonfun$mapPartitionsInternal$2$adapted(RDD.scala:850)
	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:327)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:291)
	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90)
	at org.apache.spark.scheduler.Task.run(Task.scala:127)
	at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:455)
	at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1377)
	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:458)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.nio.file.NoSuchFileException: /data/9/hadoop/nm/usercache/koert/appcache/application_1568061697664_8250/blockmgr-57f28014-cdf2-431e-8e11-447ba5c2b2f2/0b/shuffle_0_0_0.index
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
	at java.nio.file.Files.newByteChannel(Files.java:361)
	at java.nio.file.Files.newByteChannel(Files.java:407)
	at org.apache.spark.shuffle.IndexShuffleBlockResolver.getBlockData(IndexShuffleBlockResolver.scala:204)
	at org.apache.spark.storage.BlockManager.getBlockData(BlockManager.scala:551)
	at org.apache.spark.storage.ShuffleBlockFetcherIterator.fetchLocalBlocks(ShuffleBlockFetcherIterator.scala:349)
	at org.apache.spark.storage.ShuffleBlockFetcherIterator.initialize(ShuffleBlockFetcherIterator.scala:391)
	at org.apache.spark.storage.ShuffleBlockFetcherIterator.<init>(ShuffleBlockFetcherIterator.scala:161)
	at org.apache.spark.shuffle.BlockStoreShuffleReader.read(BlockStoreShuffleReader.scala:60)
	at org.apache.spark.sql.execution.ShuffledRowRDD.compute(ShuffledRowRDD.scala:172)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:327)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:291)
	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:327)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:291)
	... 11 more

Issue Links

• relates to: SPARK-27665 Split fetch shuffle blocks protocol from OpenBlocks
• links to: GitHub Pull Request #26095