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From "Matthew Jacobs (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-5240: Allow config of number of disk I/O threads per disk type
Date Tue, 20 Jun 2017 22:40:25 GMT
Matthew Jacobs has posted comments on this change.

Change subject: IMPALA-5240: Allow config of number of disk I/O threads per disk type
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/7232/1/be/src/runtime/disk-io-mgr.h
File be/src/runtime/disk-io-mgr.h:

PS1, Line 637:   ///  - threads_per_rotational_disk: number of read threads to create per
rotational
             :   ///    disk. This is also the max queue depth.
             :   ///  - threads_per_flash_disk: number of read threads to create per flash
disk. This is
             :   ///    also the max queue depth.
             :   DiskIoMgr(int num_disks, int threads_per_disk, int min_buffer_size,
             :       int max_buffer_size, int threads_per_rotational_disk = 0,
             :       int threads_per_flash_disk = 0)
> I think the best thing would be to remove them because I don't think we hav
You can remove threads_per_disk and instead change the tests to pass the same test value to
both threads_per_rotational_disk and threads_per_flash_disk. Then you'll exercise the new
code paths and get the same behavior that the tests had previously, so it shouldn't change.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I094aff3747104104fe0465d73dcdbef5d9892f7c
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Bikramjeet Vig <bikramjeet.vig@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bikramjeet.vig@cloudera.com>
Gerrit-Reviewer: Matthew Jacobs <mj@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-HasComments: Yes

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