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https://issues.apache.org/jira/browse/HIVE-25897?focusedWorklogId=715737&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-715737
 ]

ASF GitHub Bot logged work on HIVE-25897:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 26/Jan/22 14:59
            Start Date: 26/Jan/22 14:59
    Worklog Time Spent: 10m 
      Work Description: lcspinter commented on a change in pull request #2973:
URL: https://github.com/apache/hive/pull/2973#discussion_r792724777



##########
File path: 
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/conf/MetastoreConf.java
##########
@@ -1600,7 +1602,9 @@ public static ConfVars getMetaConf(String name) {
     // Deprecated Hive values that we are keeping for backwards compatibility.
     @Deprecated
     
HIVE_CODAHALE_METRICS_REPORTER_CLASSES("hive.service.metrics.codahale.reporter.classes",
-        "hive.service.metrics.codahale.reporter.classes", "",
+        "hive.service.metrics.codahale.reporter.classes",
+        
"org.apache.hadoop.hive.common.metrics.metrics2.JsonFileMetricsReporter, " +
+        "org.apache.hadoop.hive.common.metrics.metrics2.JmxMetricsReporter",

Review comment:
       This param is used to initialize the CodahaleMetricsReporter classes. In 
some unit test, we are using it, and since the unit test were moved from the 
`hive-common` module to the `standalone-metastore-common` module, I had to add 
these values to the `MetastoreConf` to keep backward compatibility. 




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 715737)
    Time Spent: 50m  (was: 40m)

> Move delta metric collection into AcidMetricsService
> ----------------------------------------------------
>
>                 Key: HIVE-25897
>                 URL: https://issues.apache.org/jira/browse/HIVE-25897
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: László Pintér
>            Assignee: László Pintér
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> DeltaFilesMetricReporter and AcidMetricsService are two different threads 
> collecting ACID related metrics. It makes sense to merge those threads since 
> they share the same goal. 



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