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https://issues.apache.org/jira/browse/HIVE-25842?focusedWorklogId=712682&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-712682
]
ASF GitHub Bot logged work on HIVE-25842:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 21/Jan/22 08:53
Start Date: 21/Jan/22 08:53
Worklog Time Spent: 10m
Work Description: klcopp commented on a change in pull request #2916:
URL: https://github.com/apache/hive/pull/2916#discussion_r789465573
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Cleaner.java
##########
@@ -412,7 +421,11 @@ private boolean removeFiles(String location,
ValidWriteIdList writeIdList, Compa
}
StringBuilder extraDebugInfo = new
StringBuilder("[").append(obsoleteDirs.stream()
.map(Path::getName).collect(Collectors.joining(",")));
- return remove(location, ci, obsoleteDirs, true, fs, extraDebugInfo);
+ boolean success = remove(location, ci, obsoleteDirs, true, fs,
extraDebugInfo);
+ if (dir.getObsolete().size() > 0) {
+ updateDeltaFilesMetrics(ci.dbname, ci.tableName, ci.partName,
obsoleteDirs);
Review comment:
I regret suggesting that we include aborted directories in the obsolete
count.
1. There are other metrics about aborted directories.
2. previouslyActiveDeltas - (obsolete + aborted) != currentlyActiveDeltas,
so the active delta count would be off.
My bad :/
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Issue Time Tracking
-------------------
Worklog Id: (was: 712682)
Time Spent: 6h 40m (was: 6.5h)
> Reimplement delta file metric collection
> ----------------------------------------
>
> Key: HIVE-25842
> URL: https://issues.apache.org/jira/browse/HIVE-25842
> Project: Hive
> Issue Type: Improvement
> Reporter: László Pintér
> Assignee: László Pintér
> Priority: Major
> Labels: pull-request-available
> Time Spent: 6h 40m
> Remaining Estimate: 0h
>
> FUNCTIONALITY: Metrics are collected only when a Tez query runs a table
> (select * and select count( * ) don't update the metrics)
> Metrics aren't updated after compaction or cleaning after compaction, so
> users will probably see "issues" with compaction (like many active or
> obsolete or small deltas) that don't exist.
> RISK: Metrics are collected during queries – we tried to put a try-catch
> around each method in DeltaFilesMetricsReporter but of course this isn't
> foolproof. This is a HUGE performance and functionality liability. Tests
> caught some issues, but our tests aren't perfect.
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