[
https://issues.apache.org/jira/browse/HIVE-25842?focusedWorklogId=712194&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-712194
]
ASF GitHub Bot logged work on HIVE-25842:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 20/Jan/22 16:50
Start Date: 20/Jan/22 16:50
Worklog Time Spent: 10m
Work Description: lcspinter commented on a change in pull request #2916:
URL: https://github.com/apache/hive/pull/2916#discussion_r788957639
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/metrics/DeltaFilesMetricReporter.java
##########
@@ -139,157 +92,37 @@ public static DeltaFilesMetricReporter getInstance() {
return InstanceHolder.instance;
}
- public static synchronized void init(HiveConf conf) throws Exception {
- getInstance().configure(conf);
+ public static synchronized void init(Configuration conf, TxnStore
txnHandler) throws Exception {
+ if (!initialized) {
+ getInstance().configure(conf, txnHandler);
+ initialized = true;
+ }
}
- private void configure(HiveConf conf) throws Exception {
+ private void configure(Configuration conf, TxnStore txnHandler) throws
Exception {
long reportingInterval =
- HiveConf.getTimeVar(conf,
HiveConf.ConfVars.HIVE_TXN_ACID_METRICS_REPORTING_INTERVAL, TimeUnit.SECONDS);
- hiveEntitySeparator = conf.getVar(HiveConf.ConfVars.HIVE_ENTITY_SEPARATOR);
+ MetastoreConf.getTimeVar(conf,
MetastoreConf.ConfVars.METASTORE_DELTAMETRICS_REPORTING_INTERVAL,
TimeUnit.SECONDS);
+
+ maxCacheSize = MetastoreConf.getIntVar(conf,
MetastoreConf.ConfVars.METASTORE_DELTAMETRICS_MAX_CACHE_SIZE);
- initCachesForMetrics(conf);
initObjectsForMetrics();
ThreadFactory threadFactory =
new
ThreadFactoryBuilder().setDaemon(true).setNameFormat("DeltaFilesMetricReporter
%d").build();
- executorService =
Executors.newSingleThreadScheduledExecutor(threadFactory);
- executorService.scheduleAtFixedRate(new ReportingTask(), 0,
reportingInterval, TimeUnit.SECONDS);
+ reporterExecutorService =
Executors.newSingleThreadScheduledExecutor(threadFactory);
+ reporterExecutorService.scheduleAtFixedRate(new ReportingTask(txnHandler),
0, reportingInterval, TimeUnit.SECONDS);
LOG.info("Started DeltaFilesMetricReporter thread");
Review comment:
Could you please point me to the original one? I cannot find it.
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Issue Time Tracking
-------------------
Worklog Id: (was: 712194)
Time Spent: 5h 50m (was: 5h 40m)
> 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: 5h 50m
> 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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