getpwuid_r is not thread-safe on RHEL6
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Key: HADOOP-7156
URL: https://issues.apache.org/jira/browse/HADOOP-7156
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 0.22.0
Environment: RHEL 6.0 "Santiago"
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Critical
Fix For: 0.22.0
Due to the following bug in SSSD, functions like getpwuid_r are not thread-safe
in RHEL 6.0 if sssd is specified in /etc/nsswitch.conf (as it is by default):
https://fedorahosted.org/sssd/ticket/640
This causes many fetch failures in the case that the native libraries are
available, since the SecureIO functions call getpwuid_r as part of fstat. By
enabling -Xcheck:jni I get the following trace on JVM crash:
*** glibc detected *** /mnt/toolchain/JDK6u20-64bit/bin/java: free(): invalid
pointer: 0x0000003575741d23 ***
======= Backtrace: =========
/lib64/libc.so.6[0x3575675676]
/lib64/libnss_sss.so.2(_nss_sss_getpwuid_r+0x11b)[0x7fe716cb42cb]
/lib64/libc.so.6(getpwuid_r+0xdd)[0x35756a5dfd]
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