Luo Chen has posted comments on this change.

Change subject: [STO][IDX] Eliminated excess antimatter in LSMBTree
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Patch Set 10:

Just out of curious, how this optimization deals with existing records in disk 
components. Say record with pk1 is stored in some disk component. Another 
record with pk1 is then inserted again (or more precisely, upsert) into memory 
component. Even though pk1 could be immediately deleted, in this case we still 
need to keep this anti-matter tuple?

In other words, this optimization only applies to records inserted for the 
first time?

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Gerrit-MessageType: comment
Gerrit-Change-Id: I12a67eff8431b52d1f9051b793a5a64b15c009e9
Gerrit-PatchSet: 10
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: Ildar Absalyamov <ildar.absalya...@gmail.com>
Gerrit-Reviewer: Ildar Absalyamov <ildar.absalya...@gmail.com>
Gerrit-Reviewer: Jenkins <jenk...@fulliautomatix.ics.uci.edu>
Gerrit-Reviewer: Luo Chen <cl...@uci.edu>
Gerrit-Reviewer: Michael Blow <mb...@apache.org>
Gerrit-Reviewer: Till Westmann <ti...@apache.org>
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