Lars Volker has uploaded this change for review. (
http://gerrit.cloudera.org:8080/10156
Change subject: IMPALA-6889: Fix race around terminating processes
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IMPALA-6889: Fix race around terminating processes
A process with empty cmdline can trip up the Process class in our test
code. When a process dies it becomes a zombie until it gets reaped by
its parent.
>From 'man proc':
/proc/[pid]/cmdline
This read-only file holds the complete command line for the
process, unless the process is a zombie. In the latter case,
there is nothing in this file: that is, a read on this file
will return 0 characters. The command-line arguments appear
in this file as a set of strings separated by null bytes
('\0'), with a further null byte after the last string.
To fix this, we take a copy of the cmdline before passing it to the
Process ctor to prevent it from changing.
I couldn't come up with a test for this.
Change-Id: Iecf630e0b71d91469650636e81f940a7bec07113
---
M tests/common/impala_cluster.py
1 file changed, 11 insertions(+), 6 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/56/10156/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Iecf630e0b71d91469650636e81f940a7bec07113
Gerrit-Change-Number: 10156
Gerrit-PatchSet: 1
Gerrit-Owner: Lars Volker <[email protected]>
