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From "Yingyi Bu (Code Review)" <do-not-re...@asterixdb.incubator.apache.org>
Subject Change in asterixdb[master]: Ensure Metadata locks are acquired for SqlPP queries
Date Fri, 31 Mar 2017 00:35:12 GMT
Yingyi Bu has posted comments on this change.

Change subject: Ensure Metadata locks are acquired for SqlPP queries
......................................................................


Patch Set 2:

In fact, for correctness, we have to do it in the right way.

The following queries are valid queries that you can run from the Web UI:
Q1: Metadata.`Dataset`;

Q2: array_count(Metadata.`Dataset`);

There are many fronts that can be a "dataset"...   Therefore, we have to acquire locks upon
recognizing datasets and dataverses.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I5f468599897a37cbcb12d8577d072f340f0d949c
Gerrit-PatchSet: 2
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: abdullah alamoudi <bamousaa@gmail.com>
Gerrit-Reviewer: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Gerrit-Reviewer: Till Westmann <tillw@apache.org>
Gerrit-Reviewer: Yingyi Bu <buyingyi@gmail.com>
Gerrit-Reviewer: abdullah alamoudi <bamousaa@gmail.com>
Gerrit-HasComments: No

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