[kudu-CR](branch-0.9.x) Change flush defaults to encourage parallel IO and larger flushes

["Jean-Daniel Cryans (Code Review)" <ge...@cloudera.org>]

Jean-Daniel Cryans has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/3268

Change subject: Change flush defaults to encourage parallel IO and larger flushes
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Change flush defaults to encourage parallel IO and larger flushes

Based on some recent experiments with high throughput writes using YCSB[1],
these defaults make more sense for the typical throughput-oriented applications
that Kudu is currently targeting.

[1] http://getkudu.io/2016/04/26/ycsb.html

Change-Id: I1c70d9c76ed33bbfca5480e1d1f343c6dab36d3b
Reviewed-on: http://gerrit.cloudera.org:8080/3186
Tested-by: Kudu Jenkins
Reviewed-by: Jean-Daniel Cryans
(cherry picked from commit b27bb312b5f12126e3a150d0885cd9b178f42336)
---
M docs/release_notes.adoc
M src/kudu/cfile/cfile_writer.cc
M src/kudu/fs/block_manager.cc
M src/kudu/tablet/tablet_peer-test.cc
M src/kudu/tablet/tablet_peer_mm_ops.cc
5 files changed, 25 insertions(+), 16 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/68/3268/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I1c70d9c76ed33bbfca5480e1d1f343c6dab36d3b
Gerrit-PatchSet: 1
Gerrit-Project: kudu
Gerrit-Branch: branch-0.9.x
Gerrit-Owner: Jean-Daniel Cryans
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>