InvisibleProgrammer commented on code in PR #5722:
URL: https://github.com/apache/hive/pull/5722#discussion_r2024253417
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iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java:
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@@ -422,6 +426,32 @@ public void
preAlterTable(org.apache.hadoop.hive.metastore.api.Table hmsTable, E
}
}
+ private HiveLock lockObject(org.apache.hadoop.hive.metastore.api.Table
hmsTable) {
+ if (hiveLockEnabled(hmsTable, conf)) {
+ return new MetastoreLock(conf, new CachedClientPool(conf,
Maps.fromProperties(catalogProperties)),
+ catalogProperties.getProperty(Catalogs.NAME), hmsTable.getDbName(),
hmsTable.getTableName());
+ } else {
+ return new NoLock();
+ }
+ }
+
+ private static boolean
hiveLockEnabled(org.apache.hadoop.hive.metastore.api.Table hmsTable,
Configuration conf) {
+ if (SessionStateUtil.getQueryState(conf).map(QueryState::getHiveOperation)
Review Comment:
If I understood it correctly, the evaluation order of deciding if locking is
enabled is: session level -> table properties -> config file.
Am I correct?
The other question is: What is the user experience if the enable locking,
disable locking on a session level, forget about it and use a table when
locking is explicitly enabled on table level?
Should we give at least a warning in that case just to be able to
troubleshoot it?
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