[Impala-CR](cdh5-trunk) IMPALA-3677: Write minidump on SIGUSR1

["Lars Volker (Code Review)" <ge...@cloudera.org>]

Lars Volker has uploaded a new patch set (#3).

Change subject: IMPALA-3677: Write minidump on SIGUSR1
......................................................................

IMPALA-3677: Write minidump on SIGUSR1

Sending SIGUSR1 to any of the impala daemons (catalogd, impalad,
statestored) will trigger a minidump write.

The hotspot JVM also uses SIGUSR1 internally. However the documentation
explains, that existing signal handlers will be transparently wrapped by
the JVM and no spurious signals should be received by the daemon signal
handler:
http://www.oracle.com/technetwork/java/javase/signals-139944.html

Example: killall -SIGUSR1 catalogd

Change-Id: I40149e48e391451de21a5c8bda18e2307fc89513
---
M be/src/util/minidump.cc
M tests/custom_cluster/test_breakpad.py
2 files changed, 53 insertions(+), 6 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/12/3312/3
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I40149e48e391451de21a5c8bda18e2307fc89513
Gerrit-PatchSet: 3
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Lars Volker <lv...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <ta...@cloudera.com>