Hao Hao has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/16794 )

Change subject: client: allow tablet ID lookups from the MetaCache
......................................................................


Patch Set 3:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/16794/3/src/kudu/client/meta_cache.h
File src/kudu/client/meta_cache.h:

http://gerrit.cloudera.org:8080/#/c/16794/3/src/kudu/client/meta_cache.h@427
PS3, Line 427: LookupTabletById
nit: add a comment?


http://gerrit.cloudera.org:8080/#/c/16794/3/src/kudu/client/meta_cache.cc
File src/kudu/client/meta_cache.cc:

http://gerrit.cloudera.org:8080/#/c/16794/3/src/kudu/client/meta_cache.cc@92
PS3, Line 92: client_tablet_locations_by_id_ttl_ms
Sorry, not directly related to your change, but do you think such flag makes 
sense for cache by key as well?


http://gerrit.cloudera.org:8080/#/c/16794/3/src/kudu/client/meta_cache.cc@662
PS3, Line 662: Status new_status = status;
             :   if (RetryOrReconnectIfNecessary(&new_status)) {
             :     ignore_result(delete_me.release());
             :     return;
             :   }
             :   // Check for more application errors.
             :   // Note: RetryOrReconnectIfNecessary only checked for generic 
application
             :   // errors. This check is specific to LookupRpcById.
             :   if (new_status.ok() && resp_.has_error()) {
             :     new_status = StatusFromPB(resp_.error().status());
             :     if (new_status.IsServiceUnavailable()) {
             :       // One or more of the tablets is not running. Retry after 
some time.
             :       mutable_retrier()->DelayedRetry(this, new_status);
             :       ignore_result(delete_me.release());
             :       return;
             :     }
             :   }
This seems dup with LookupRpc::SendRpcCb, do you think it is worth to 
generalize the common code?



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ib2333add5c3ab8403c48e69d29c90f3aec0914b6
Gerrit-Change-Number: 16794
Gerrit-PatchSet: 3
Gerrit-Owner: Andrew Wong <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Hao Hao <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Comment-Date: Wed, 02 Dec 2020 23:37:06 +0000
Gerrit-HasComments: Yes

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