Yingyi Bu has posted comments on this change.

Change subject: Fix Decoding of byte[] Records
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Patch Set 2:

(1 comment)

https://asterix-gerrit.ics.uci.edu/#/c/951/2/asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/input/record/converter/DCPMessageToRecordConverter.java
File 
asterixdb/asterix-external-data/src/main/java/org/apache/asterix/external/input/record/converter/DCPMessageToRecordConverter.java:

Line 116:             bytes.compact();
> Once per record. However, this is mostly a no op. it is only an op if the d
That's going to be a lot of copies if I understand correctly...  You end up 
copying half of frame k times, where k is the number of records within that 
frame.   "half-of-frame" is the mathematical expectation.

For example, you have 100 records for a 32KB frame, you'll copy 1.6MB data for 
each frame:  100 * (32KB/2).  Am I correct?

How many frames will flow through this set call?  Is it proportional to the 
data volume?


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Gerrit-MessageType: comment
Gerrit-Change-Id: I71c3d8b8dfa5a98123725f139247d2b5ce10012e
Gerrit-PatchSet: 2
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: abdullah alamoudi <[email protected]>
Gerrit-Reviewer: Jenkins <[email protected]>
Gerrit-Reviewer: Yingyi Bu <[email protected]>
Gerrit-Reviewer: abdullah alamoudi <[email protected]>
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