You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2012/10/11 19:45:18 UTC
[jira] [Closed] (HADOOP-8648) libhadoop: native CRC32 validation
crashes when io.bytes.per.checksum=1
[ https://issues.apache.org/jira/browse/HADOOP-8648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arun C Murthy closed HADOOP-8648.
---------------------------------
> libhadoop: native CRC32 validation crashes when io.bytes.per.checksum=1
> ------------------------------------------------------------------------
>
> Key: HADOOP-8648
> URL: https://issues.apache.org/jira/browse/HADOOP-8648
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Fix For: 2.0.2-alpha
>
> Attachments: HADOOP-8648.001.patch, HADOOP-8648.002.patch, HADOOP-8648.003.patch, HADOOP-8648.004.patch, HADOOP-8648.005.patch
>
>
> The native CRC32 code, found in {{pipelined_crc32c}}, crashes when chunksize is set to 1.
> {code}
> 12:27:14,886 INFO NativeCodeLoader:50 - Loaded the native-hadoop library
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> # SIGSEGV (0xb) at pc=0x00007fa00ee5a340, pid=24100, tid=140326058854144
> #
> # JRE version: 6.0_29-b11
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (20.4-b02 mixed mode linux-amd64 compressed oops)
> # Problematic frame:
> # C [libhadoop.so.1.0.0+0x8340] pipelined_crc32c+0xa0
> #
> # An error report file with more information is saved as:
> # /h/hs_err_pid24100.log
> #
> # If you would like to submit a bug report, please visit:
> # http://java.sun.com/webapps/bugreport/crash.jsp
> #
> Aborted
> {code}
> The Java CRC code works fine in this case.
> Choosing blocksize=1 is a __very__ odd choice. It means that we're storing a 4-byte checksum for every byte.
> {code}
> -rw-r--r-- 1 cmccabe users 49398 Aug 3 11:33 blk_4702510289566780538
> -rw-r--r-- 1 cmccabe users 197599 Aug 3 11:33 blk_4702510289566780538_1199.meta
> {code}
> However, obviously crashing is never the right thing to do.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira