Github user orhankislal commented on the issue:
https://github.com/apache/incubator-madlib/pull/78
Here is what I am thinking: We should create a new JIRA for SSSP Phase 2 to
explore plpgsql implementation with an array to replace `toupdate` and
`message` tables. I am not sure how this array will be distributed/broadcasted
to the segments and would prefer to take a closer look at the performance
measurements.
In the meanwhile, we can combine these two tables with a simple workaround.
The `message` table was necessary since we have truncate `toupdate` before
repopulating it. If we use 2 `toupdate` tables, we can alternate them (fill one
using the values of the other) and eliminate the need for `message`.
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