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Just nits. Nice clean code. Thanks!


common/src/java/org/apache/hadoop/hive/common/metrics/LegacyMetrics.java (line 
209)
<https://reviews.apache.org/r/52029/#comment217113>

    nit: Too long line (100 char)



common/src/java/org/apache/hadoop/hive/common/metrics/common/Metrics.java (line 
117)
<https://reviews.apache.org/r/52029/#comment217114>

    nit: Too long line (100 char)



common/src/java/org/apache/hadoop/hive/common/metrics/metrics2/MetricVariableRatioGauge.java
 (line 24)
<https://reviews.apache.org/r/52029/#comment217115>

    nit: extra line?



common/src/java/org/apache/hadoop/hive/common/metrics/metrics2/MetricVariableRatioGauge.java
 (line 33)
<https://reviews.apache.org/r/52029/#comment217116>

    nit: indent by 4 space instead



common/src/test/org/apache/hadoop/hive/common/metrics/MetricsTestUtils.java 
(line 53)
<https://reviews.apache.org/r/52029/#comment217118>

    nit: indent by 4 space instead



common/src/test/org/apache/hadoop/hive/common/metrics/metrics2/TestMetricVariableRatioGauge.java
 (line 67)
<https://reviews.apache.org/r/52029/#comment217119>

    nit: maybe one test, where the ration is not decimal?



service/src/java/org/apache/hive/service/cli/session/SessionManager.java (line 
260)
<https://reviews.apache.org/r/52029/#comment217122>

    Documentation - we should create a documentation of these statistics. This 
abandoned session metrics was not clear for me - had to read the code :)



service/src/test/org/apache/hive/service/cli/session/TestSessionManagerMetrics.java
 (line 152)
<https://reviews.apache.org/r/52029/#comment217124>

    nit: Too long line (100 char)



service/src/test/org/apache/hive/service/cli/session/TestSessionManagerMetrics.java
 (line 154)
<https://reviews.apache.org/r/52029/#comment217125>

    nit: Too long line (100 char)



service/src/test/org/apache/hive/service/cli/session/TestSessionManagerMetrics.java
 (line 252)
<https://reviews.apache.org/r/52029/#comment217126>

    nit: name (testAciveSessionTimeMetrics)


- Peter Vary


On Sept. 19, 2016, 1:21 p.m., Barna Zsombor Klara wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/52029/
> -----------------------------------------------------------
> 
> (Updated Sept. 19, 2016, 1:21 p.m.)
> 
> 
> Review request for hive, Gabor Szadovszky, Peter Vary, and Sergio Pena.
> 
> 
> Repository: hive-git
> 
> 
> Description
> -------
> 
> HIVE-14753: Track the number of open/closed/abandoned sessions in HS2
> 
> 
> Diffs
> -----
> 
>   common/src/java/org/apache/hadoop/hive/common/metrics/LegacyMetrics.java 
> 9be9b50aa02ff88816eb92079eaff9afa3e1be90 
>   common/src/java/org/apache/hadoop/hive/common/metrics/common/Metrics.java 
> 4297233ed12a7d9a2fa03ac3204e8335c0aed821 
>   
> common/src/java/org/apache/hadoop/hive/common/metrics/common/MetricsConstant.java
>  9dc96f9c6412720a891b5c55e2074049c893d780 
>   
> common/src/java/org/apache/hadoop/hive/common/metrics/metrics2/CodahaleMetrics.java
>  4c433678bd62ea74b80babce9856681192deb25f 
>   
> common/src/java/org/apache/hadoop/hive/common/metrics/metrics2/MetricVariableRatioGauge.java
>  PRE-CREATION 
>   common/src/test/org/apache/hadoop/hive/common/metrics/MetricsTestUtils.java 
> 46676589e6656d0f13f1931bfe67a63dd1920042 
>   
> common/src/test/org/apache/hadoop/hive/common/metrics/metrics2/TestMetricVariableRatioGauge.java
>  PRE-CREATION 
>   service/src/java/org/apache/hive/service/cli/session/SessionManager.java 
> 15bab0660fcb9a997d66f6ff0a5dbc0e39c37ae7 
>   
> service/src/test/org/apache/hive/service/cli/session/TestSessionManagerMetrics.java
>  5511c54ff431211f7f72deaa017c915b839dfb2a 
> 
> Diff: https://reviews.apache.org/r/52029/diff/
> 
> 
> Testing
> -------
> 
> Ran the unit tests in the common and the ql subprojects.
> Manually verified the metrics using the HS2 webui metric dump.
> 
> 
> Thanks,
> 
> Barna Zsombor Klara
> 
>

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