[kudu-CR] KUDU-2055 [part 1]: Coalesce hole punching when deleting groups of blocks

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

Hello Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/7656

to look at the new patch set (#5).

Change subject: KUDU-2055 [part 1]: Coalesce hole punching when deleting groups of blocks
......................................................................

KUDU-2055 [part 1]: Coalesce hole punching when deleting groups of
blocks

Similar to 'BlockCreationTransaction', this patch adds a new layer
of abstraction at Block Manager to coalesce blocks deletions in a
logical operation, e.g. compaction.

By coalescing blocks deletions, the number of hole punching in LBM
will be reduced from one per block to one per log block container.
This should overall optimize the performance of operation that
involves batch deletions, such as compaction and hole repunching.

This patch is the first part of a serial. It only adds the new
abstraction 'BlockDeletionTransaction', and doesn't yet change
any deletion semantics or improve performance.

Change-Id: Iecb252b3a5665d5471bb82301d0c8012a68de959
---
M src/kudu/cfile/bloomfile.cc
M src/kudu/cfile/bloomfile.h
M src/kudu/cfile/cfile-test.cc
M src/kudu/cfile/cfile_writer.cc
M src/kudu/cfile/cfile_writer.h
M src/kudu/fs/block_manager-test.cc
M src/kudu/fs/block_manager.h
M src/kudu/fs/file_block_manager.cc
M src/kudu/fs/file_block_manager.h
M src/kudu/fs/log_block_manager-test.cc
M src/kudu/fs/log_block_manager.cc
M src/kudu/fs/log_block_manager.h
M src/kudu/tablet/deltafile.cc
M src/kudu/tablet/deltafile.h
M src/kudu/tablet/diskrowset.cc
M src/kudu/tablet/diskrowset.h
M src/kudu/tablet/multi_column_writer.cc
M src/kudu/tablet/multi_column_writer.h
M src/kudu/tserver/tablet_copy_client.h
19 files changed, 157 insertions(+), 43 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/56/7656/5
-- 
To view, visit http://gerrit.cloudera.org:8080/7656
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Iecb252b3a5665d5471bb82301d0c8012a68de959
Gerrit-PatchSet: 5
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <da...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot