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From "Impala Public Jenkins (Code Review)" <>
Subject [Impala-ASF-CR] IMPALA-5588: Reduce the frequency of fault injection
Date Fri, 30 Jun 2017 09:27:48 GMT
Impala Public Jenkins has submitted this change and it was merged.

Change subject: IMPALA-5588: Reduce the frequency of fault injection

IMPALA-5588: Reduce the frequency of fault injection

Previously, the fault injection utility will inject a fault
on every 3 RPC calls for ReportExecStatus() RPCs. As shown
in IMPALA-5588, with an unfortunate sequence in which other
RPCs happen between the retry of ReportExecStatus() RPC in
QueryState::ReportExecStatusAux(), ReportExecStatus() can
hit injected faults 3 times in a row, causing the query
to be cancelled in QueryState::ReportExecStatusAux().

This change fixes the problem by reducing the fault injection
frequency to once every 16 RPC calls for ReportExecStatus(),
CancelQueryFInstances() and ExecQueryFInstances() RPCs.

Also incorporated the fix by Michael Brown for a python bug in so tests hitting unexpected exception
will re-throw that exception for better diagnosis on test failure.

Change-Id: I0ce4445e8552a22f23371bed1196caf7d0a3f312
Reviewed-by: Michael Ho <>
Tested-by: Impala Public Jenkins
M be/src/runtime/backend-client.h
M tests/custom_cluster/
2 files changed, 7 insertions(+), 5 deletions(-)

  Impala Public Jenkins: Verified
  Michael Ho: Looks good to me, approved

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Gerrit-MessageType: merged
Gerrit-Change-Id: I0ce4445e8552a22f23371bed1196caf7d0a3f312
Gerrit-PatchSet: 3
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Michael Ho <>
Gerrit-Reviewer: Dan Hecht <>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Michael Brown <>
Gerrit-Reviewer: Michael Ho <>

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