Hello Alexey Serbin, Andrew Wong,
I'd like you to do a code review. Please visit
http://gerrit.cloudera.org:8080/15081
to review the following change.
Change subject: file cache: support alternate open modes
......................................................................
file cache: support alternate open modes
Previously, the file cache only supported opening existing files; any new
file creation happened out-of-band and then the file reopened via the cache.
If we're going to use the file cache for log index chunks, however, we need
to support CREATE_OR_OPEN style usage, and doing it in the log index itself
is somewhat hairy.
This patch modifies the file cache to support all of the modes defined in
Env::OpenMode. I tried to ensure that cache operations look and feel like a
standard POSIX filesystem, but it's tough to get this right, and I'm sure I
missed some corner cases, especially those involving the CREATE_OR_OPEN*
modes and concurrent deletes. Thankfully none of our use cases (block
managers, log segments, and log index chunks) do that.
Change-Id: Ie167302ef85b8e1a40fbb89a7742e2cbb43bcec3
---
M src/kudu/fs/file_block_manager.cc
M src/kudu/fs/log_block_manager.cc
M src/kudu/util/file_cache-stress-test.cc
M src/kudu/util/file_cache-test.cc
M src/kudu/util/file_cache.cc
M src/kudu/util/file_cache.h
6 files changed, 240 insertions(+), 86 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/81/15081/1
--
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie167302ef85b8e1a40fbb89a7742e2cbb43bcec3
Gerrit-Change-Number: 15081
Gerrit-PatchSet: 1
Gerrit-Owner: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
