Will Berkeley has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/9323


Change subject: KUDU-2238. DMS not flush under memory pressure.
......................................................................

KUDU-2238. DMS not flush under memory pressure.

When we choose DMS to flush, now we always pick the DMS with
highest log retention. However, as KUDU-2238 shows, in some cases
DMS with highest log retention may only consume little memory, and
other DMSs may consume much more memory, but get no chance to be
flushed, even under memory pressure.

This patch gives the ability to take memory consumption into
consideration when we choose DMS.

Change-Id: I0c04d76aa0e3888352dc56eeb493a5437ef47e42
Reviewed-on: http://gerrit.cloudera.org:8080/8904
Reviewed-by: Todd Lipcon <t...@apache.org>
Tested-by: Kudu Jenkins
(cherry picked from commit f8d18693546cd518c8873b7a5f4c08579f85199a)
---
M src/kudu/tablet/tablet.cc
M src/kudu/tablet/tablet.h
M src/kudu/tablet/tablet_replica_mm_ops.cc
3 files changed, 18 insertions(+), 8 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/23/9323/1
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Gerrit-Project: kudu
Gerrit-Branch: branch-1.6.x
Gerrit-MessageType: newchange
Gerrit-Change-Id: I0c04d76aa0e3888352dc56eeb493a5437ef47e42
Gerrit-Change-Number: 9323
Gerrit-PatchSet: 1
Gerrit-Owner: Will Berkeley <wdberke...@gmail.com>
Gerrit-Reviewer: zhen.zhang <zhangz...@xiaomi.com>

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