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Posted to reviews@kudu.apache.org by "Adar Dembo (Code Review)" <ge...@cloudera.org> on 2019/01/18 04:20:02 UTC

[kudu-CR] check session when applying operation

Hello Alexey Serbin,

I'd like you to do a code review. Please visit

    http://gerrit.cloudera.org:8080/12237

to review the following change.


Change subject: check session when applying operation
......................................................................

check session when applying operation

Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduSession.java
M java/kudu-client/src/test/java/org/apache/kudu/client/TestKuduClient.java
2 files changed, 22 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/37/12237/1
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 1
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>

[kudu-CR] [java] log warning if applying operation on a closed session

Posted by "Hao Hao (Code Review)" <ge...@cloudera.org>.
Hao Hao has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] log warning if applying operation on a closed session
......................................................................


Patch Set 5: Code-Review+2


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 5
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Wed, 23 Jan 2019 18:58:10 +0000
Gerrit-HasComments: No

[kudu-CR] [java] log warning if applying operation on a closed session

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Alexey Serbin has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] log warning if applying operation on a closed session
......................................................................


Patch Set 5: Code-Review+2

(1 comment)

http://gerrit.cloudera.org:8080/#/c/12237/4//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/12237/4//COMMIT_MSG@14
PS4, Line 14: a breaking change for clients that relied on the old broken behavior.
            : 
> I ended up going with Hao's suggestion: soften this into a warning instead.
SGTM



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 5
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Wed, 23 Jan 2019 18:23:41 +0000
Gerrit-HasComments: Yes

[kudu-CR] check session when applying operation

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Adar Dembo has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: check session when applying operation
......................................................................


Patch Set 2:

PS1 is the original pull request from Karl Manong (https://github.com/apache/kudu/pull/15).

PS2 includes a few cosmetic changes from me.


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 2
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Fri, 18 Jan 2019 04:25:18 +0000
Gerrit-HasComments: No

[kudu-CR] [java] log warning if applying operation on a closed session

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Adar Dembo has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] log warning if applying operation on a closed session
......................................................................

[java] log warning if applying operation on a closed session

Closed sessions won't flush on another close() call, so it's somewhat
dubious to apply() an operation to a closed session. This change adds a
warning if apply() is used with a closed session.

Originally this patch enforced the new behavior via precondition, but that's
a breaking change for clients that relied on the old broken behavior.

Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Reviewed-on: http://gerrit.cloudera.org:8080/12237
Tested-by: Kudu Jenkins
Reviewed-by: Grant Henke <gr...@apache.org>
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduSession.java
M java/kudu-client/src/test/java/org/apache/kudu/client/TestKuduClient.java
2 files changed, 30 insertions(+), 2 deletions(-)

Approvals:
  Kudu Jenkins: Verified
  Grant Henke: Looks good to me, approved

-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 7
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)

[kudu-CR] check session when applying operation

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Hello Alexey Serbin, Kudu Jenkins, Anonymous Coward (314), 

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

    http://gerrit.cloudera.org:8080/12237

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

Change subject: check session when applying operation
......................................................................

check session when applying operation

Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduSession.java
M java/kudu-client/src/test/java/org/apache/kudu/client/TestKuduClient.java
2 files changed, 24 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/37/12237/3
-- 
To view, visit http://gerrit.cloudera.org:8080/12237
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 3
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward (314)
Gerrit-Reviewer: Kudu Jenkins (120)

[kudu-CR] [java] throw exception if applying operation on a closed session

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Hello Alexey Serbin, Kudu Jenkins, Anonymous Coward (314), Grant Henke, 

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

    http://gerrit.cloudera.org:8080/12237

to look at the new patch set (#4).

Change subject: [java] throw exception if applying operation on a closed session
......................................................................

[java] throw exception if applying operation on a closed session

Closed sessions won't flush on another close() call, so it's somewhat
dubious to apply() an operation to a closed session. This change adds a
precondition that prevents apply() from working if the session has been
closed. There's a new test, and a fix to a non-compliant existing test.

This is a breaking change for clients that relied on the old broken
behavior; they will now throw. Thus I'm not sure we actually want this.

Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduSession.java
M java/kudu-client/src/test/java/org/apache/kudu/client/TestKuduClient.java
2 files changed, 24 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/37/12237/4
-- 
To view, visit http://gerrit.cloudera.org:8080/12237
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 4
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward (314)
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)

[kudu-CR] [java] throw exception if applying operation on a closed session

Posted by "Hao Hao (Code Review)" <ge...@cloudera.org>.
Hao Hao has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] throw exception if applying operation on a closed session
......................................................................


Patch Set 4:

> Like you said, this is a breaking change given user code could
 > start failing at runtime on upgrade.
 > 
 > A hacky alternative to make the re-use bug safer could be to add
 > the session back to the client on re-use. It defeats the purpose of
 > closing, but prevents a bug without breaking the api.

Or can we log a warning instead if to avoid breaking changes?


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 4
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Fri, 18 Jan 2019 06:14:50 +0000
Gerrit-HasComments: No

[kudu-CR] check session when applying operation

Posted by "Grant Henke (Code Review)" <ge...@cloudera.org>.
Grant Henke has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: check session when applying operation
......................................................................


Patch Set 3:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/12237/2//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/12237/2//COMMIT_MSG@7
PS2, Line 7: check session when applying operation
Nit: [java] Check that the session is not closed when applying operation

Could a bit more description be added here? What was the behavior/error seen before this fix?



-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 3
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward (314)
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Fri, 18 Jan 2019 05:34:06 +0000
Gerrit-HasComments: Yes

[kudu-CR] check session when applying operation

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Hello Alexey Serbin, Kudu Jenkins, 

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

    http://gerrit.cloudera.org:8080/12237

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

Change subject: check session when applying operation
......................................................................

check session when applying operation

Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduSession.java
M java/kudu-client/src/test/java/org/apache/kudu/client/TestKuduClient.java
2 files changed, 24 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/37/12237/2
-- 
To view, visit http://gerrit.cloudera.org:8080/12237
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 2
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)

[kudu-CR] [java] throw exception if applying operation on a closed session

Posted by "Alexey Serbin (Code Review)" <ge...@cloudera.org>.
Alexey Serbin has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] throw exception if applying operation on a closed session
......................................................................


Patch Set 4:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/12237/4//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/12237/4//COMMIT_MSG@14
PS4, Line 14: This is a breaking change for clients that relied on the old broken
            : behavior; they will now throw. Thus I'm not sure we actually want this.
Could throwing an exception in the specified case be optional?  I guess by default we want to throw, but if some property specified for Kudu client, then there will be just a warning message logged?



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 4
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Sat, 19 Jan 2019 01:00:04 +0000
Gerrit-HasComments: Yes

[kudu-CR] [java] throw exception if applying operation on a closed session

Posted by "Hao Hao (Code Review)" <ge...@cloudera.org>.
Hao Hao has removed Anonymous Coward (314) from this change.  ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] throw exception if applying operation on a closed session
......................................................................


Removed reviewer null.
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: deleteReviewer
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 4
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)

[kudu-CR] [java] throw exception if applying operation on a closed session

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Adar Dembo has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] throw exception if applying operation on a closed session
......................................................................


Patch Set 4:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/12237/2//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/12237/2//COMMIT_MSG@7
PS2, Line 7: [java] throw exception if applying operation on a closed session
> Nit: [java] Check that the session is not closed when applying operation
Added description.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 4
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward (314)
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Fri, 18 Jan 2019 05:43:53 +0000
Gerrit-HasComments: Yes

[kudu-CR] check session when applying operation

Posted by "Grant Henke (Code Review)" <ge...@cloudera.org>.
Grant Henke has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: check session when applying operation
......................................................................


Patch Set 3: Code-Review+2


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 3
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward (314)
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Fri, 18 Jan 2019 05:34:25 +0000
Gerrit-HasComments: No

[kudu-CR] [java] log warning if applying operation on a closed session

Posted by "Grant Henke (Code Review)" <ge...@cloudera.org>.
Grant Henke has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] log warning if applying operation on a closed session
......................................................................


Patch Set 6: Code-Review+2


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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 6
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Wed, 23 Jan 2019 20:23:08 +0000
Gerrit-HasComments: No

[kudu-CR] [java] throw exception if applying operation on a closed session

Posted by "Grant Henke (Code Review)" <ge...@cloudera.org>.
Grant Henke has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] throw exception if applying operation on a closed session
......................................................................


Patch Set 4:

Like you said, this is a breaking change given user code could start failing at runtime on upgrade. 

A hacky alternative to make the re-use bug safer could be to add the session back to the client on re-use. It defeats the purpose of closing, but prevents a bug without breaking the api.


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

Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 4
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Anonymous Coward (314)
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Fri, 18 Jan 2019 05:45:43 +0000
Gerrit-HasComments: No

[kudu-CR] [java] log warning if applying operation on a closed session

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Adar Dembo has posted comments on this change. ( http://gerrit.cloudera.org:8080/12237 )

Change subject: [java] log warning if applying operation on a closed session
......................................................................


Patch Set 5:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/12237/4//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/12237/4//COMMIT_MSG@14
PS4, Line 14: a breaking change for clients that relied on the old broken behavior.
            : 
> Could throwing an exception in the specified case be optional?  I guess by 
I ended up going with Hao's suggestion: soften this into a warning instead.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 5
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Comment-Date: Wed, 23 Jan 2019 18:15:05 +0000
Gerrit-HasComments: Yes

[kudu-CR] [java] log warning if applying operation on a closed session

Posted by "Adar Dembo (Code Review)" <ge...@cloudera.org>.
Hello Alexey Serbin, Kudu Jenkins, Grant Henke, Hao Hao, 

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

    http://gerrit.cloudera.org:8080/12237

to look at the new patch set (#5).

Change subject: [java] log warning if applying operation on a closed session
......................................................................

[java] log warning if applying operation on a closed session

Closed sessions won't flush on another close() call, so it's somewhat
dubious to apply() an operation to a closed session. This change adds a
warning if apply() is used with a closed session.

Originally this patch enforced the new behavior via precondition, but that's
a breaking change for clients that relied on the old broken behavior.

Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
---
M java/kudu-client/src/main/java/org/apache/kudu/client/AsyncKuduSession.java
M java/kudu-client/src/test/java/org/apache/kudu/client/TestKuduClient.java
2 files changed, 30 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/37/12237/5
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I0fe221fedbb91959985f5ee374f1b691be2426a9
Gerrit-Change-Number: 12237
Gerrit-PatchSet: 5
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Hao Hao <ha...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)