alirezazamani commented on a change in pull request #355: Change
IllegalStateException to Helix Exception for CRUSH based rebalance strategy
algorithm.
URL: https://github.com/apache/helix/pull/355#discussion_r306518338
##
File path:
pkuwm edited a comment on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514336391
I personally don't like null, either, since I see it as anti-pattern. Why I
put null in this draft was I saw `return null` as well
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514351120
Did you mean optional causes performance overhead? Just curious, can you
explain as I don’t see it a performance overhead here? Thanks.
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514336391
I personally don't like null, either, since I see it as anti-pattern. Why I
put null in this draft was I saw `return null` as well in the
narendly commented on issue #355: Changing IllegalStateException to Helix
Exception for CRUSH based rebalance strategy algorithm.
URL: https://github.com/apache/helix/pull/355#issuecomment-514328978
Could we reformat the PR according to the guidelines? Thanks :) -hunter
On Jul 23,
narendly commented on issue #356: Read Failure while reading non-existent znode.
URL: https://github.com/apache/helix/pull/356#issuecomment-514328130
Could you reformat the pull request according to the guidelines? Thanks! -
Hunter
On Jul 23, 2019, 20:19, at 20:19, Ali Reza Zamani
alirezazamani commented on a change in pull request #356: Read Failure while
reading non-existent znode.
URL: https://github.com/apache/helix/pull/356#discussion_r306464047
##
File path:
helix-core/src/main/java/org/apache/helix/manager/zk/zookeeper/ZkClient.java
##
@@
narendly commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514293990
I think Optional would be beneficial if you want to have fluid chained-calls
(similar to functional programming). Here, it is possible
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514291290
For the isWFConfig part, I understand. Definitely doable.
Just for a discussion about Optional. I think it is designed to solve the
alirezazamani opened a new issue #358: removing
DEFAULT_VIEW_CLUSTER_REFRESH_PERIOD from clusterconfig
URL: https://github.com/apache/helix/issues/358
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narendly commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514134881
As for the timeout value of 0, the semantics you proposed are a bit
confusing.
Perhaps enforce that the timeout value must be
pkuwm edited a comment on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514130185
> As for parseWorkflow - I think it will be cleaner if we could have
something like isWorkflowConfig() instead that returns T/F,
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514130185
> As for parseWorkflow - I think it will be cleaner if we could have
something like isWorkflowConfig() instead that returns T/F, and
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514109056
Definitely could. I thought about it. getWorkflows() calls getWorkflows(0).
But considering future.get can also accept 0 as timeouts.
narendly commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514106795
And once you've done that, in your unit test, create a mock of getWorkflow
() function, and make it take a long time (to simulate ZK
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514106193
Right. I was actually considering that. But it seems after checking
isWFConfig, parsing is still needed. To me it seems redundant.
narendly commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514105616
Also, to follow the DRY principle - could you try to reuse the logic we have
in the existing getWorkflows ()? getWorkflows(long
narendly commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514104602
As for parseWorkflow - I think it will be cleaner if we could have something
like isWorkflowConfig() instead that returns T/F, and
narendly commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514101832
Please review the pull request guidelines and format your pull request
accordingly.
On Jul 23, 2019, 10:01, at 10:01, pkuwm
pkuwm commented on issue #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357#issuecomment-514099797
Wonder what the unit test requirement is. Can you please suggest?
This
pkuwm opened a new pull request #357: [WIP] Add getWorkflows(long timeout) to
TaskDriver.
URL: https://github.com/apache/helix/pull/357
Sometimes zookeeper hangs in the getWorkflows() call, and we could
provide an API with a timeout to handle this at the application level.
Use
pkuwm commented on a change in pull request #356: Read Failure while reading
non-existent znode.
URL: https://github.com/apache/helix/pull/356#discussion_r306149611
##
File path:
helix-core/src/main/java/org/apache/helix/manager/zk/zookeeper/ZkClient.java
##
@@ -721,6
pkuwm commented on a change in pull request #355: Changing
IllegalStateException to Helix Exception for CRUSH based rebalance strategy
algorithm.
URL: https://github.com/apache/helix/pull/355#discussion_r306147335
##
File path:
alirezazamani opened a new pull request #356: Read Failure while reading
non-existent znode.
URL: https://github.com/apache/helix/pull/356
In case of encountering NoNodeException while reading data from a znode that
does not exist, readfailurecounter will be incremented which shouldn't
dasahcc commented on a change in pull request #355: Changing
IllegalStateException to Helix Exception for CRUSH based rebalance strategy
algorithm.
URL: https://github.com/apache/helix/pull/355#discussion_r306135786
##
File path:
jiajunwang commented on a change in pull request #348: Adding the configuration
items of the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348#discussion_r306132886
##
File path: helix-core/src/main/java/org/apache/helix/model/ClusterConfig.java
##
@@ -19,19
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306097821
##
File path:
helix-rest/src/test/java/org/apache/helix/rest/server/TestClusterAccessor.java
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306097771
##
File path:
helix-rest/src/test/java/org/apache/helix/rest/server/TestClusterAccessor.java
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306097649
##
File path:
helix-rest/src/test/java/org/apache/helix/rest/server/TestClusterAccessor.java
pkuwm commented on issue #339: Implementation of stateModelDef modification in
REST 2.0
URL: https://github.com/apache/helix/pull/339#issuecomment-514017940
Sounds good!
On Mon, Jul 22, 2019 at 6:34 PM kaisun2000 wrote:
> *@kaisun2000* commented on this pull request.
>
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306097170
##
File path:
pkuwm edited a comment on issue #349: Need to improve the code style &
formatting regulation
URL: https://github.com/apache/helix/issues/349#issuecomment-514013728
How about the order of imports, to make the imports consistent in the
project? Like:
```
import java.*
import
pkuwm commented on issue #349: Need to improve the code style & formatting
regulation
URL: https://github.com/apache/helix/issues/349#issuecomment-514013728
How about the order of imports, to make the imports consistent in the
project? Like:
:::java
import java.*
import javax.*
pkuwm closed issue #353: Don't ignore exceptions: adding log messages to help
check exceptions.
URL: https://github.com/apache/helix/issues/353
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pkuwm commented on issue #353: Don't ignore exceptions: adding log messages to
help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513992696
Sure. Agree on this: a problem could have multiple solutions. Maybe this is
just a personal coding style. I just
narendly commented on issue #353: Don't ignore exceptions: adding log messages
to help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513991286
Just to reiterate, since this part of the code is working correctly, I would
just leave this as is. If you would
pkuwm commented on issue #353: Don't ignore exceptions: adding log messages to
help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513991073
I agree with you. Instead of using an exception like way, maybe an if
condition could solve the problem and avoid
narendly commented on issue #353: Don't ignore exceptions: adding log messages
to help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513990562
Yes. Like I implied in my previous comment, there are certain fields that
only show up in valid WorkflowConfigs.
pkuwm commented on issue #353: Don't ignore exceptions: adding log messages to
help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513989903
Yes, it makes sense not to expose the config details.
But just curious, regarding this workflowConfig
narendly commented on issue #353: Don't ignore exceptions: adding log messages
to help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513988811
What you are saying makes sense. But for this exception specifically, we do
not want to log it because it will
jiajunwang merged pull request #341: Initial checking for the Weight-Aware
Globally-Even Distribute rebalancer
URL: https://github.com/apache/helix/pull/341
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jiajunwang commented on issue #341: Initial checking for the Weight-Aware
Globally-Even Distribute rebalancer
URL: https://github.com/apache/helix/pull/341#issuecomment-513988590
As discussed with other team members, this check-in looks good in general.
We might need to update it further
pkuwm commented on issue #353: Don't ignore exceptions: adding log messages to
help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513987724
Thanks for the explanation! I understand what the code is doing. If the
property is not a correct type, it continues
jiajunwang commented on issue #331: CallbackHandler async re-subscribe watcher
can potentially miss events
URL: https://github.com/apache/helix/issues/331#issuecomment-513984628
The root cause of the issue is a race condition in Helix cache refresh
logic. Basically, Helix relies on the ZK
dasahcc commented on issue #354: No stats fetched for ResourceConfig through
ConfigAccessor
URL: https://github.com/apache/helix/issues/354#issuecomment-513981654
@narendly This is a bug since all the ZNode objects extends from
HelixProperty which contains Stats. We should not have
narendly commented on issue #354: No stats fetched for ResourceConfig through
ConfigAccessor
URL: https://github.com/apache/helix/issues/354#issuecomment-513980123
Could we add a little more context for this? What do we need stats for?
Can't we use DataAccessor for Stats instead?
dasahcc closed pull request #58: helix-core: AutoRebalancer should include only
numbered states in `currentMapping`
URL: https://github.com/apache/helix/pull/58
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dasahcc closed pull request #294: Implement view cluster aggregator
URL: https://github.com/apache/helix/pull/294
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dasahcc closed pull request #59: helix-core: AutoRebalanceStrategy should sort
by partition count and state priority
URL: https://github.com/apache/helix/pull/59
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dasahcc closed pull request #300: Daemonize SubscribeChangeEventProcessor
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URL: https://github.com/apache/helix/pull/300
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DeplayedAutoRebalancerz#computeNewIdealState
URL: https://github.com/apache/helix/pull/201
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dasahcc closed pull request #299: Remove unused _forceRebalanceTimer from
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0.8.4 release.
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dasahcc closed pull request #200: throw new Exception to avoid ugly NPE
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dasahcc closed pull request #26: [HELIX-592] addCluster should respect
overwriteExisitng when adding stat...
URL: https://github.com/apache/helix/pull/26
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dasahcc closed pull request #1: [HELIX-60] CORS Enabled Dashboard for Apache
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dasahcc opened a new issue #354: No stats fetched for ResourceConfig through
ConfigAccessor
URL: https://github.com/apache/helix/issues/354
If you read ResourceConfig through ConfigAccessor, the stats are not pulled
from ZK. Thus the stats data is incorrect with these objects.
We
narendly commented on issue #353: Don't ignore exceptions: adding log messages
to help check exceptions.
URL: https://github.com/apache/helix/issues/353#issuecomment-513972958
Actually, we do not want to log anything here.
1. This exception does not actually signal that anything is
narendly commented on issue #352: Don't log and throw: removing redundant logs
right before throwing exception
URL: https://github.com/apache/helix/issues/352#issuecomment-513970542
It makes sense not to double-log things in the log and the exception. If we
want to make this change,
pkuwm commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306050637
##
File path:
helix-rest/src/main/java/org/apache/helix/rest/server/resources/helix/ClusterAccessor.java
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306041352
##
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pkuwm commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306039336
##
File path:
helix-rest/src/test/java/org/apache/helix/rest/server/TestClusterAccessor.java
##
pkuwm commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306039336
##
File path:
helix-rest/src/test/java/org/apache/helix/rest/server/TestClusterAccessor.java
##
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306036658
##
File path:
helix-rest/src/test/java/org/apache/helix/rest/server/TestClusterAccessor.java
kaisun2000 commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r306034091
##
File path:
pkuwm opened a new issue #353: Don't ignore exceptions: adding log messages to
help check exceptions.
URL: https://github.com/apache/helix/issues/353
Ex.:
pkuwm opened a new issue #352: Don't log and throw: removing redundant logs
right before throwing exception
URL: https://github.com/apache/helix/issues/352
Same log message should not be logged right while an exception is also
thrown. Ex.:
alirezazamani commented on a change in pull request #344: Changing
IllegalStateException to Helix Exception for CRUSH based rebalance strategy
algorithm.
URL: https://github.com/apache/helix/pull/344#discussion_r305914218
##
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alirezazamani closed pull request #346: Unwanted logs have been removed.
URL: https://github.com/apache/helix/pull/346
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alirezazamani closed pull request #344: Changing IllegalStateException to Helix
Exception for CRUSH based rebalance strategy algorithm.
URL: https://github.com/apache/helix/pull/344
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alirezazamani commented on a change in pull request #346: Unwanted logs have
been removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305927600
##
File path:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/CrushRebalanceStrategy.java
alirezazamani opened a new issue #351: removing the todo log
URL: https://github.com/apache/helix/issues/351
If debugging NPE is complete, some if the logs can be removed for CRUSH
based algorithm (in computeResourceBestPossibleState function).
alirezazamani commented on a change in pull request #344: Changing
IllegalStateException to Helix Exception for CRUSH based rebalance strategy
algorithm.
URL: https://github.com/apache/helix/pull/344#discussion_r305914218
##
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pkuwm opened a new issue #350: linkedlist
URL: https://github.com/apache/helix/issues/350
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pkuwm commented on issue #326: Add getWorkflow(long timeout) to TaskDriver
URL: https://github.com/apache/helix/issues/326#issuecomment-513576653
Awesome. I'll take it then. Thanks.
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narendly commented on issue #326: Add getWorkflow(long timeout) to TaskDriver
URL: https://github.com/apache/helix/issues/326#issuecomment-513569098
Feel free to contribute. I have not started working on it yet. The
implementation should be straightforward and I could help with the review.
pkuwm commented on issue #326: Add getWorkflow(long timeout) to TaskDriver
URL: https://github.com/apache/helix/issues/326#issuecomment-513568933
Thanks. Are you working on it? If not, may I take this ticket and
contribute?
On Sun, Jul 21, 2019 at 1:33 AM Hunter Lee wrote:
narendly commented on issue #349: Need to improve the code style & formatting
regulation
URL: https://github.com/apache/helix/issues/349#issuecomment-513535129
+1
If possible, let us also add the Apache license at the top of every file.
Hunter
On Sat, Jul 20, 2019,
narendly commented on issue #326: Add getWorkflow(long timeout) to TaskDriver
URL: https://github.com/apache/helix/issues/326#issuecomment-513534644
It is a typo - it is getWorkflows(). For now, only adding getWorkflows
(timeout) would suffice.
Hunter
Sent from BlueMail
pkuwm commented on issue #326: Add getWorkflow(long timeout) to TaskDriver
URL: https://github.com/apache/helix/issues/326#issuecomment-513532438
I don't see the call: getWorkflow() in the source code. Did you mean
pkuwm commented on a change in pull request #348: Adding the configuration
items of the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348#discussion_r305572150
##
File path: helix-core/src/main/java/org/apache/helix/model/ClusterConfig.java
##
@@ -19,19
jiajunwang opened a new issue #349: Need to improve the code style & formatting
regulation
URL: https://github.com/apache/helix/issues/349
The current format file helix-style.xml has very limited configured items.
This leaves too much flexibility to Helix developers. We shall add more
pkuwm commented on a change in pull request #333: Fix issue when client only
sets ANY at cluster level throttle config
URL: https://github.com/apache/helix/pull/333#discussion_r305588139
##
File path:
pkuwm commented on a change in pull request #344: Changing
IllegalStateException to Helix Exception for CRUSH based rebalance strategy
algorithm.
URL: https://github.com/apache/helix/pull/344#discussion_r305587778
##
File path:
pkuwm commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r305587698
##
File path:
helix-rest/src/main/java/org/apache/helix/rest/server/resources/helix/ClusterAccessor.java
dasahcc commented on a change in pull request #346: Unwanted logs have been
removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305574275
##
File path:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/CrushRebalanceStrategy.java
##
dasahcc commented on a change in pull request #346: Unwanted logs have been
removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305574275
##
File path:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/CrushRebalanceStrategy.java
##
dasahcc commented on a change in pull request #346: Unwanted logs have been
removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305574112
##
File path:
helix-core/src/main/java/org/apache/helix/controller/stages/BestPossibleStateCalcStage.java
##
@@
pkuwm commented on a change in pull request #346: Unwanted logs have been
removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305573518
##
File path:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/strategy/CrushRebalanceStrategy.java
##
@@
pkuwm commented on a change in pull request #348: Adding the configuration
items of the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348#discussion_r305572150
##
File path: helix-core/src/main/java/org/apache/helix/model/ClusterConfig.java
##
@@ -19,19
alirezazamani commented on a change in pull request #346: Unwanted logs have
been removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305572008
##
File path:
helix-core/src/main/java/org/apache/helix/controller/stages/BestPossibleStateCalcStage.java
##
@@
jiajunwang commented on a change in pull request #348: Adding the configuration
items of the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348#discussion_r305571783
##
File path: helix-core/src/main/java/org/apache/helix/model/ClusterConfig.java
##
@@ -19,19
jiajunwang commented on a change in pull request #348: Adding the configuration
items of the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348#discussion_r305571617
##
File path: helix-core/src/main/java/org/apache/helix/model/InstanceConfig.java
##
@@
pkuwm commented on a change in pull request #348: Adding the configuration
items of the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348#discussion_r305571503
##
File path: helix-core/src/main/java/org/apache/helix/model/InstanceConfig.java
##
@@ -505,6
jiajunwang opened a new pull request #348: Adding the configuration items of
the WAGED rebalancer.
URL: https://github.com/apache/helix/pull/348
### Issues
#342
### Description
This PR includes the necessary configuration items to support the WAGED
rebalancer.
###
jiajunwang commented on issue #331: CallbackHandler async re-subscribe watcher
can potentially miss events
URL: https://github.com/apache/helix/issues/331#issuecomment-513437251
The re-subscribe does not rely on the async logic. It is by default done in
the ZkClient.
The real problem
lei-xia commented on a change in pull request #346: Unwanted logs have been
removed.
URL: https://github.com/apache/helix/pull/346#discussion_r305564620
##
File path:
helix-core/src/main/java/org/apache/helix/controller/stages/BestPossibleStateCalcStage.java
##
@@
lei-xia commented on issue #346: Unwanted logs have been removed.
URL: https://github.com/apache/helix/pull/346#issuecomment-513428194
Is this fixing a single issue? Why there are 4 commits? Can they be
combined to one commit?
pkuwm commented on a change in pull request #339: Implementation of
stateModelDef modification in REST 2.0
URL: https://github.com/apache/helix/pull/339#discussion_r305563733
##
File path:
helix-rest/src/main/java/org/apache/helix/rest/server/resources/helix/ClusterAccessor.java
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