Internal Jenkins has submitted this change and it was merged.
Change subject: IMPALA-2979: Fix scheduling on remote hosts
......................................................................
IMPALA-2979: Fix scheduling on remote hosts
Also fixes: IMPALA-2400, IMPALA-3043
This change fixes scheduling scan-ranges on remote hosts by adding
remote backend selection capability to SimpleScheduler. Prior to this
change the scheduler would try to select a local backend even when
remote scheduling was requested.
This change also allows pseudo-randomized remote backend selection to
prevent convoying, which could happen when different independent
schedulers had the same internal state, e.g. after a cluster restart. To
enable the new behavior set the query option SCHEDULE_RANDOM_REPLICA to
true.
This change also fixes IMPALA-2400: Unpredictable locality behavior
for reading Parquet files
This change also fixes IMPALA-3043: SimpleScheduler does not handle
hosts with multiple IP addresses correctly
This change also does some clean-up in scheduler.h and
simple-scheduler.{h,cc}.
Change-Id: I044f83806fcde820fcb38047cf6b8e780d803858
Reviewed-on: http://gerrit.cloudera.org:8080/3771
Reviewed-by: Lars Volker <[email protected]>
Reviewed-by: Sailesh Mukil <[email protected]>
Tested-by: Internal Jenkins
---
M be/src/scheduling/scheduler.h
M be/src/scheduling/simple-scheduler-test.cc
M be/src/scheduling/simple-scheduler.cc
M be/src/scheduling/simple-scheduler.h
M be/src/service/query-options.cc
M be/src/service/query-options.h
M common/thrift/ImpalaInternalService.thrift
M common/thrift/ImpalaService.thrift
M fe/src/main/java/com/cloudera/impala/analysis/TableRef.java
M fe/src/test/java/com/cloudera/impala/analysis/AnalyzeStmtsTest.java
M fe/src/test/java/com/cloudera/impala/analysis/ParserTest.java
M fe/src/test/java/com/cloudera/impala/analysis/ToSqlTest.java
12 files changed, 984 insertions(+), 489 deletions(-)
Approvals:
Lars Volker: Looks good to me, but someone else must approve
Internal Jenkins: Verified
Sailesh Mukil: Looks good to me, approved
--
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Gerrit-MessageType: merged
Gerrit-Change-Id: I044f83806fcde820fcb38047cf6b8e780d803858
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Lars Volker <[email protected]>
Gerrit-Reviewer: Internal Jenkins
Gerrit-Reviewer: Lars Volker <[email protected]>
Gerrit-Reviewer: Sailesh Mukil <[email protected]>
