Dan Hecht has posted comments on this change.

Change subject: IMPALA-3292. Kudu scanner should not fail if KeepAlive request 
fails
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/2708/2/be/src/exec/kudu-scan-node.cc
File be/src/exec/kudu-scan-node.cc:

Line 433:         scanner.KeepKuduScannerAlive();
> I couldn't figure out why the keep alive would be needed outside of the Add
Its for the reason I alluded to in my earlier comment that suggested the 
rewrite -- it follows the call to AddBatchWithTimeout() for the very last 
iteration of the loop.

In the old code, KeepKuduScannerAlive() is in the loop body so doesn't execute 
when added_to_queue becomes true.

My earlier suggested rewrite (to patch 1) fixes that so that the special case 
KeepKuduScannerAlive() call can be removed.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I10ad2cfde3e50a4486d03f8dd763faac2eb4926a
Gerrit-PatchSet: 2
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Todd Lipcon <[email protected]>
Gerrit-Reviewer: Casey Ching <[email protected]>
Gerrit-Reviewer: Dan Hecht <[email protected]>
Gerrit-HasComments: Yes

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