[kudu-CR] bshuf block: some low-hanging-fruit optimizations on write path

["Todd Lipcon (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/5195

to look at the new patch set (#2).

Change subject: bshuf_block: some low-hanging-fruit optimizations on write path
......................................................................

bshuf_block: some low-hanging-fruit optimizations on write path

Rather than adding an element at a time and calling the virtual
'IsBlockFull()' function, we predetermine how many elements we will
accept. This allows a much simpler batched 'Add()' implementation.

This sped up the write side of cfile-test's 100M-integer test about 2x.

Change-Id: Ia895f7731e5371967782ef9cb176a9d493894a83
---
M src/kudu/cfile/bshuf_block.h
1 file changed, 11 insertions(+), 15 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/95/5195/2
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ia895f7731e5371967782ef9cb176a9d493894a83
Gerrit-PatchSet: 2
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot