Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/13196 )

Change subject: [util] interface to invalidate cache entries
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/13196/2/src/kudu/util/cache.h
File src/kudu/util/cache.h:

http://gerrit.cloudera.org:8080/#/c/13196/2/src/kudu/util/cache.h@266
PS2, Line 266: For example, in case of
             :   // multi-shard cache, when the 'iteration_func' returns 
'false',
             :   // the invalidation at current shard stops and switches to the 
next
             :   // non-yet-processed shard, if any is present.
> An alternative would be to reduce the two numeric arguments into a single b
Since it's a bit of a generic interface, I don't think that having just a 
boolean parameter gives a good sense on the progress of iteration over the 
entries, even for the case of a cache with FIFO eviction policy.  E.g., if 
wanting to account for how many entries have been processed so far in a shard, 
having just the boolean parameter assumes the ProcessingControl should be 
stateful.  I'm not sure that's the best way to go.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I1e340c3270b5580114151cdd40afe82576c18099
Gerrit-Change-Number: 13196
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Comment-Date: Wed, 01 May 2019 18:48:53 +0000
Gerrit-HasComments: Yes

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