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Posted to reviews@kudu.apache.org by "Alexey Serbin (Code Review)" <ge...@cloudera.org> on 2022/01/20 19:19:51 UTC

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Alexey Serbin has uploaded this change for review. ( http://gerrit.cloudera.org:8080/18164


Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................

[docs] add info on READ_YOUR_WRITES scan mode

Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
---
M docs/transaction_semantics.adoc
1 file changed, 16 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/64/18164/1
-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Andrew Wong (Code Review)" <ge...@cloudera.org>.
Andrew Wong has posted comments on this change. ( http://gerrit.cloudera.org:8080/18164 )

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................


Patch Set 3: Code-Review+2


-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 3
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>
Gerrit-Comment-Date: Fri, 21 Jan 2022 05:01:52 +0000
Gerrit-HasComments: No

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Alexey Serbin has posted comments on this change. ( http://gerrit.cloudera.org:8080/18164 )

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/18164/2/docs/transaction_semantics.adoc
File docs/transaction_semantics.adoc:

http://gerrit.cloudera.org:8080/#/c/18164/2/docs/transaction_semantics.adoc@246
PS2, Line 246: the timestamp which is higher than the timestamp provided by the client
             : but lower than the server's oldest in-flight write operation, i.e.
             : `max(client_propagated_timestamp + 1, server_clean_timestamp)`.
> Maybe:
Done



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>
Gerrit-Comment-Date: Fri, 21 Jan 2022 02:08:07 +0000
Gerrit-HasComments: Yes

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Alexey Serbin has posted comments on this change. ( http://gerrit.cloudera.org:8080/18164 )

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................


Patch Set 1:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/18164/1/docs/transaction_semantics.adoc
File docs/transaction_semantics.adoc:

http://gerrit.cloudera.org:8080/#/c/18164/1/docs/transaction_semantics.adoc@244
PS1, Line 244: When issuing a scan request in this read mode,
             : a Kudu client automatically chooses a timestamp
> Maybe we should reword this to mention that the tablet servers are the ones
Indeed, that's the way it does so -- sounds better then the vague and a bit misleading notion of the client automatically selecting appropriate timestamp for the scan.  Done.


http://gerrit.cloudera.org:8080/#/c/18164/1/docs/transaction_semantics.adoc@246
PS1, Line 246: but lower
> Isn't it equal to or higher than the clean time, given we take max(propagat
Done



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>
Gerrit-Comment-Date: Thu, 20 Jan 2022 20:49:50 +0000
Gerrit-HasComments: Yes

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Alexey Serbin has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/18164 )

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................

[docs] add info on READ_YOUR_WRITES scan mode

Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Reviewed-on: http://gerrit.cloudera.org:8080/18164
Tested-by: Kudu Jenkins
Reviewed-by: Andrew Wong <aw...@cloudera.com>
---
M docs/transaction_semantics.adoc
1 file changed, 16 insertions(+), 0 deletions(-)

Approvals:
  Kudu Jenkins: Verified
  Andrew Wong: Looks good to me, approved

-- 
To view, visit http://gerrit.cloudera.org:8080/18164
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 4
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Andrew Wong (Code Review)" <ge...@cloudera.org>.
Andrew Wong has posted comments on this change. ( http://gerrit.cloudera.org:8080/18164 )

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................


Patch Set 2: Code-Review+1

(1 comment)

http://gerrit.cloudera.org:8080/#/c/18164/2/docs/transaction_semantics.adoc
File docs/transaction_semantics.adoc:

http://gerrit.cloudera.org:8080/#/c/18164/2/docs/transaction_semantics.adoc@246
PS2, Line 246: the timestamp which is higher than the timestamp provided by the client
             : but lower than the server's oldest in-flight write operation, i.e.
             : `max(client_propagated_timestamp + 1, server_clean_timestamp)`.
Maybe:

"the server selects a timestamp higher than the timestamp provided by the client, that is also guaranteed to have all write operations prior already committed and applied to the data."



-- 
To view, visit http://gerrit.cloudera.org:8080/18164
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>
Gerrit-Comment-Date: Fri, 21 Jan 2022 01:07:12 +0000
Gerrit-HasComments: Yes

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Andrew Wong (Code Review)" <ge...@cloudera.org>.
Andrew Wong has posted comments on this change. ( http://gerrit.cloudera.org:8080/18164 )

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................


Patch Set 1:

(2 comments)

Thanks for updating these docs!

http://gerrit.cloudera.org:8080/#/c/18164/1/docs/transaction_semantics.adoc
File docs/transaction_semantics.adoc:

http://gerrit.cloudera.org:8080/#/c/18164/1/docs/transaction_semantics.adoc@244
PS1, Line 244: When issuing a scan request in this read mode,
             : a Kudu client automatically chooses a timestamp
Maybe we should reword this to mention that the tablet servers are the ones picking the timestamps?


http://gerrit.cloudera.org:8080/#/c/18164/1/docs/transaction_semantics.adoc@246
PS1, Line 246: but lower
Isn't it equal to or higher than the clean time, given we take max(propagated timestamp + 1, clean time)?



-- 
To view, visit http://gerrit.cloudera.org:8080/18164
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>
Gerrit-Comment-Date: Thu, 20 Jan 2022 20:20:40 +0000
Gerrit-HasComments: Yes

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Hello Zoltan Chovan, Attila Bukor, Kudu Jenkins, Andrew Wong, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/18164

to look at the new patch set (#2).

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................

[docs] add info on READ_YOUR_WRITES scan mode

Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
---
M docs/transaction_semantics.adoc
1 file changed, 17 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/64/18164/2
-- 
To view, visit http://gerrit.cloudera.org:8080/18164
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>

[kudu-CR] [docs] add info on READ YOUR WRITES scan mode

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Hello Zoltan Chovan, Attila Bukor, Kudu Jenkins, Andrew Wong, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/18164

to look at the new patch set (#3).

Change subject: [docs] add info on READ_YOUR_WRITES scan mode
......................................................................

[docs] add info on READ_YOUR_WRITES scan mode

Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
---
M docs/transaction_semantics.adoc
1 file changed, 16 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/64/18164/3
-- 
To view, visit http://gerrit.cloudera.org:8080/18164
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Idccc6557d3f7dfc5640f932e460cbf7242044b51
Gerrit-Change-Number: 18164
Gerrit-PatchSet: 3
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Attila Bukor <ab...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Zoltan Chovan <zc...@cloudera.com>