Mihaly Szjatinya has uploaded a new patch set (#2). ( 
http://gerrit.cloudera.org:8080/22734 )

Change subject: WIP IMPALA-10268: Validate the debug actions when they are set
......................................................................

WIP IMPALA-10268: Validate the debug actions when they are set

This patch aims to extract existing verifications on DEBUG_ACTION query
option format onto SetQueryOption() stage, in order to prevent failures
on execution stage. Also it localizes verification code for two existing
types of debug actions.

There are two types of debug actions, global e.g. 'RECVR_ADD_BATCH:FAIL'
and ExecNode debug actions, e.g. '0:GETNEXT:FAIL'. Two types are
implemented independetely in source code, both having verification code
intertwined with execution.

In case of global debug actions most of the code inside exising
DebugActionImpl() consists of verification, therefore it make sense to
make a wrapper around it for separating out the execution code.

Things are worse for ExecNode debug actions, where verification code is
sparsed between DebugOptions() constructor and
ExecNode::ExecDebugActionImpl(). Additionaly some verification in
constructor produces warnings, while ExecDebugActionImpl() verification
either fails on DCHECK() or (in single case) returns error. For this
case reasonable solution seems to be simply calling the constructor for
temporary object and extracting verification code from
ExecDebugActionImpl(). This has the drawback of having the same warning
being produced two times.

Finally, having extracted verification code for both types, logic in
impala::SetQueryOption() combines the two verification mechanisms.

Note: In the long run it is better to write a single verification
routine for both Global and ExecNode debug actions, ideally as part of a
general unification of the two existing debug_action mechanisms. With
this in mind, current patch intends to preserve current behaviour, while
avoiding complex refactoring.

Change-Id: I53816aba2c79b556688d3b916883fee7476fdbb5
---
M be/src/exec/exec-node.cc
M be/src/exec/exec-node.h
M be/src/runtime/debug-options.cc
M be/src/runtime/debug-options.h
M be/src/service/query-options.cc
M be/src/util/debug-util.cc
M be/src/util/debug-util.h
A tests/query_test/test_debug_action.py
8 files changed, 198 insertions(+), 36 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/34/22734/2
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I53816aba2c79b556688d3b916883fee7476fdbb5
Gerrit-Change-Number: 22734
Gerrit-PatchSet: 2
Gerrit-Owner: Mihaly Szjatinya <msz...@pm.me>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>

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