[jira] [Created] (SPARK-20112) SIGSEGV in GeneratedIterator.sort_addToSorter

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

Mitesh created SPARK-20112:
------------------------------

             Summary: SIGSEGV in GeneratedIterator.sort_addToSorter
                 Key: SPARK-20112
                 URL: https://issues.apache.org/jira/browse/SPARK-20112
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.0.2
         Environment: AWS m4.10xlarge with EBS (io1 drive, 400g, 4000iops)
            Reporter: Mitesh


I'm seeing a very weird crash in GeneratedIterator.sort_addToSorter. The hs_err_pid and codegen file are attached (with query plans). Its not a deterministic repro, but running a big query load, I eventually see it come up within a few minutes.

Here is some interesting repro information:
- Using r3.8xlarge machines, which have ephermal attached drives, I can't repro this. So I think that means its not an issue with the code-gen, but I cant figure out what the difference in behavior is.
- The broadcast joins in the plan are all small tables. I have autoJoinBroadcast=-1 because I always hint which tables should be broadcast.
- As you can see from the plan, all the sources are cached memory tables

{noformat}
# A fatal error has been detected by the Java Runtime Environment:
#
#  [thread 139872345896704 also had an error]
SIGSEGV (0xb) at pc=0x00007f38a378caa3, pid=19271, tid=139872342738688
#
# JRE version: Java(TM) SE Runtime Environment (8.0_60-b27) (build 1.8.0_60-b27)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.60-b23 mixed mode linux-amd64 compressed oops)

[thread 139872348002048 also had an error]# Problematic frame:
# 
J 28454 C1 org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.sort_addToSorter$(Lorg/apache/spark/sql/catalyst/expressions/GeneratedClass$GeneratedIterator;)V (369 bytes) @ 0x00007f38a378caa3 [0x00007f38a378b5e0+0x14c3]
{noformat}



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