Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/21889
I hit the following error in my local environment.
```
sbt.ForkMain$ForkError: org.apache.spark.SparkException: Job aborted due to
stage failure: Task 0 in stage 220.0 failed 1 times, most recent failure: Lost
task 0.0 in stage 220.0 (TID 465, localhost, executor driver):
java.lang.IllegalArgumentException: Length -67059888 and offset
140049531604288must be non-negative
at
org.apache.spark.unsafe.memory.MemoryBlock.<init>(MemoryBlock.java:64)
at
org.apache.spark.unsafe.memory.OffHeapMemoryBlock.<init>(OffHeapMemoryBlock.java:26)
at
org.apache.spark.sql.execution.vectorized.OffHeapColumnVector.getBytesAsUTF8String(OffHeapColumnVector.java:221)
at
org.apache.spark.sql.execution.vectorized.WritableColumnVector.getUTF8String(WritableColumnVector.java:382)
at
org.apache.spark.sql.vectorized.ColumnarArray.getUTF8String(ColumnarArray.java:127)
at
org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1.processNext(Unknown
Source)
at
org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
at
org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$11$$anon$1.hasNext(WholeStageCodegenExec.scala:617)
at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:409)
at
org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:125)
at
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
at
org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:55)
at org.apache.spark.scheduler.Task.run(Task.scala:130)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:406)
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)
```
Could you turn on the flag in the PR? I want to trigger the tests multiple
times in the PR? @ajacques
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