Henry Robinson has posted comments on this change.

Change subject: IMPALA-5481: Clarify RowDescriptor ownership
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Patch Set 2:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/7206/2/be/src/runtime/data-stream-recvr.h
File be/src/runtime/data-stream-recvr.h:

Line 134:   /// Row schema, copied from the caller of CreateRecvr().
> No longer accurate
Done


http://gerrit.cloudera.org:8080/#/c/7206/2/be/src/runtime/row-batch.h
File be/src/runtime/row-batch.h:

Line 428:   const RowDescriptor* row_desc_;
> Maybe comment on what the expected lifetime of row_desc_ is? Alternatively 
I thought about adding them to an object pool - but the exec nodes themselves 
are already allocated from a pool and so that seemed like unnecessary 
doubling-down. 

Added a comment to here, ExecNode::row_desc() and RowDescriptor - let me know 
if that seems like enough coverage (it's hard to find the right place to talk 
about widespread ownership concerns sometimes).


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Gerrit-MessageType: comment
Gerrit-Change-Id: I2fc39170f775581d406b6a97445046f508d8d75f
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Henry Robinson <[email protected]>
Gerrit-Reviewer: Henry Robinson <[email protected]>
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
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