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From Kunal Khatua <kkha...@mapr.com>
Subject RE: SIGSEGV error - StubRoutines::jlong_disjoint_arraycopy
Date Thu, 15 Jun 2017 17:52:27 GMT
Nope.. not seen this before. 

Can you share more details of the log messages, etc? The problem might have to do with the
JSON files being very large... because the segmentation fault that triggered the JVM (Drillbit)
crash hints at that during the write of the Parquet files. 

I take it you are writing it to the local FS's temp space before moving it into HDFS. Is there
a reason you're not directly writing it into HDFS?



-----Original Message-----
From: Lee, David [mailto:David.Lee@blackrock.com] 
Sent: Thursday, June 15, 2017 7:20 AM
To: user@drill.apache.org
Subject: SIGSEGV error - StubRoutines::jlong_disjoint_arraycopy

Starting last week we started seeing the error below which terminates the drill service pid..
My research suggests that it is a space issue with /tmp, but we have plenty of free space..

I'm using dfs.tmp to convert JSON files (2 to 3 gig each) into Parquet.. 

Anyone encounter this issue before? I've tried using different versions of the JVM with no
success..

Output from drillbit_out

672 values, 512,796B raw, 465,932B comp, 1 pages, encodings: [RLE, PLAIN_DICTIONARY], dic
{ 3,376 entries, 27,008B raw, 3,376B comp} Jun 15, 2017 1:39# # A fatal error has been detected
by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f724c052570, pid=33814, tid=140128310007552 # # JRE version:
Java(TM) SE Runtime Environment (8.0_45-b14) (build 1.8.0_45-b14) # Java VM: Java HotSpot(TM)
64-Bit Server VM (25.45-b02 mixed mode linux-amd64 compressed oops) # Problematic frame:
# v  ~StubRoutines::jlong_disjoint_arraycopy
#
# Core dump written. Default location: /usr/hdp/2.3.4.0-3485/core or core.33814 # # An error
report file with more information is saved as:
# /tmp/hs_err_pid33814.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

Changed parquet settings:

store.parquet.block-size		CHANGED	134217728   < Matches HDFS block size. I FTP the files
from DFS to HDFS afterwards.
store.parquet.enable_dictionary_encoding		CHANGED  true   < Dictionary Encoding turned
on.


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