Philip Zeyliger has posted comments on this change. (
http://gerrit.cloudera.org:8080/9614 )
Change subject: DRAFT IMPALA-5973: Provide query plan in JSON format.
......................................................................
Patch Set 1:
> into JSON format, so it can be displayed in different formats (portable)
I don't think this is machine-readable. We've got things like:
"detailPrefix":"| ",
and
"totalBytes":"4.82MB",
and
"| limit":100,
in there. Those are pretty fundamentally unfriendly, and they don't look like
stable APIs. I can't intuit the original motivation here from the JIRA, but if
I wanted to build a visualization of the plan in Javascript, or if I wanted to
analyze many plans to look at patterns, I'd have a hard time doing this.
All the *Node* and *Sink* java files are a Java, object-based representation of
the plan. One potential way forward is to serialize those to Thrift, so that we
have a clear, consistent schema, and then serialize that to JSON. It may be
that TPlanNode is re-usable here, or it may not be.
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I7429ac1e93a9c524233383cafd387056fcf2542d
Gerrit-Change-Number: 9614
Gerrit-PatchSet: 1
Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Philip Zeyliger <phi...@cloudera.com>
Gerrit-Reviewer: Pranay Singh
Gerrit-Comment-Date: Wed, 14 Mar 2018 17:39:15 +0000
Gerrit-HasComments: No
