Adar Dembo has posted comments on this change.

Change subject: KUDU-1943: Add BlockTransaction to Block Manager
......................................................................


Patch Set 32:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/7207/32/src/kudu/fs/block_manager.h
File src/kudu/fs/block_manager.h:

Line 132
> Adar earlier made the point "it shouldn't be part of the WritableBlock inte
There's no avoiding a downcast in LogBlockManager::CloseBlocks; we need it in 
order to call other non-interface methods on LogWritableBlock.

But, if you prefer to reduce the number of downcasts from two to one, some 
light refactoring could do that.


http://gerrit.cloudera.org:8080/#/c/7207/32/src/kudu/fs/log_block_manager.cc
File src/kudu/fs/log_block_manager.cc:

PS32, Line 1217:   if (container_->read_only()) {
               :     state_ = CLOSED;
               :     if (container_->metrics()) {
               :       
container_->metrics()->generic_metrics.blocks_open_writing->Decrement();
               :       
container_->metrics()->generic_metrics.total_bytes_written->IncrementBy(
               :           block_length_);
               :     }
               :     return Status::Aborted("container $0 is read-only", 
container_->ToString());
               :   }
> Makes sense. I don't see a case we would want to Abort() the block if it is
I would prefer we didn't change API semantics at this point. Multiple Abort() 
calls in succession are legal; let's keep them that way (and ensure they no-op).


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Gerrit-MessageType: comment
Gerrit-Change-Id: I01f3ed830cc1f86d7bb8a66b2f780914a88884bd
Gerrit-PatchSet: 32
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Hao Hao <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Dan Burkert <[email protected]>
Gerrit-Reviewer: Hao Hao <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <[email protected]>
Gerrit-Reviewer: Tidy Bot
Gerrit-HasComments: Yes

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