[
https://issues.apache.org/jira/browse/HIVE-25102?focusedWorklogId=595339&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-595339
]
ASF GitHub Bot logged work on HIVE-25102:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 12/May/21 13:54
Start Date: 12/May/21 13:54
Worklog Time Spent: 10m
Work Description: lcspinter commented on a change in pull request #2261:
URL: https://github.com/apache/hive/pull/2261#discussion_r631063850
##########
File path:
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/Catalogs.java
##########
@@ -284,4 +333,40 @@ private static String getCatalogType(Configuration conf,
String catalogName) {
}
}
}
+
+ public static class TableCache {
+ private static final Cache<String, Table> tableCache =
Caffeine.newBuilder()
+ .expireAfterAccess(12, TimeUnit.HOURS).build();
+ private static final Set<String> keys = new TreeSet<>();
+
+ public static void removeTable(Configuration conf) {
+ String queryId = conf.get(HiveConf.ConfVars.HIVEQUERYID.varname);
+ if (queryId != null && !queryId.isEmpty()) {
+ Set<String> queryKeys = keys.stream().filter(k ->
k.startsWith(queryId)).collect(Collectors.toSet());
+ tableCache.invalidateAll(queryKeys);
+ keys.removeAll(queryKeys);
+ }
Review comment:
Correct, added logging.
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Issue Time Tracking
-------------------
Worklog Id: (was: 595339)
Time Spent: 1h 50m (was: 1h 40m)
> Cache Iceberg table objects within same query
> ---------------------------------------------
>
> Key: HIVE-25102
> URL: https://issues.apache.org/jira/browse/HIVE-25102
> Project: Hive
> Issue Type: Improvement
> Reporter: László Pintér
> Assignee: László Pintér
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> We run Catalogs.loadTable(configuration, props) plenty of times which is
> costly.
> We should:
> - Cache it maybe even globally based on the queryId
> - Make sure that the query uses one snapshot during the whole execution of a
> single query
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