[jira] [Created] (HIVE-16395) ConcurrentModificationException on config object in HoS

["Sahil Takiar (JIRA)" <ji...@apache.org>]

Sahil Takiar created HIVE-16395:
-----------------------------------

             Summary: ConcurrentModificationException on config object in HoS
                 Key: HIVE-16395
                 URL: https://issues.apache.org/jira/browse/HIVE-16395
             Project: Hive
          Issue Type: Task
          Components: Spark
            Reporter: Sahil Takiar


Looks like this is happening inside spark executors, looks to be some race condition when modifying {{Configuration}} objects.

Stack-Trace:

{quote}
java.io.IOException: java.lang.reflect.InvocationTargetException
	at org.apache.hadoop.hive.io.HiveIOExceptionHandlerChain.handleRecordReaderCreationException(HiveIOExceptionHandlerChain.java:97)
	at org.apache.hadoop.hive.io.HiveIOExceptionHandlerUtil.handleRecordReaderCreationException(HiveIOExceptionHandlerUtil.java:57)
	at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.initNextRecordReader(HadoopShimsSecure.java:267)
	at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.<init>(HadoopShimsSecure.java:213)
	at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileInputFormatShim.getRecordReader(HadoopShimsSecure.java:334)
	at org.apache.hadoop.hive.ql.io.CombineHiveInputFormat.getRecordReader(CombineHiveInputFormat.java:682)
	at org.apache.spark.rdd.HadoopRDD$$anon$1.<init>(HadoopRDD.scala:240)
	at org.apache.spark.rdd.HadoopRDD.compute(HadoopRDD.scala:211)
	at org.apache.spark.rdd.HadoopRDD.compute(HadoopRDD.scala:101)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
	at org.apache.spark.rdd.UnionRDD.compute(UnionRDD.scala:87)
	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:306)
	at org.apache.spark.rdd.RDD.iterator(RDD.scala:270)
	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:73)
	at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
	at org.apache.spark.scheduler.Task.run(Task.scala:89)
	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:242)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.apache.hadoop.hive.shims.HadoopShimsSecure$CombineFileRecordReader.initNextRecordReader(HadoopShimsSecure.java:253)
	... 21 more
Caused by: java.util.ConcurrentModificationException
	at java.util.Hashtable$Enumerator.next(Hashtable.java:1167)
	at org.apache.hadoop.conf.Configuration.iterator(Configuration.java:2455)
	at org.apache.hadoop.fs.s3a.S3AUtils.propagateBucketOptions(S3AUtils.java:716)
	at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:181)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2815)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:98)
	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2852)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2834)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:387)
	at org.apache.hadoop.fs.Path.getFileSystem(Path.java:296)
	at org.apache.hadoop.mapred.LineRecordReader.<init>(LineRecordReader.java:108)
	at org.apache.hadoop.mapred.TextInputFormat.getRecordReader(TextInputFormat.java:67)
	at org.apache.hadoop.hive.ql.io.CombineHiveRecordReader.<init>(CombineHiveRecordReader.java:68)
	... 26 more
{quote}



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