deniskuzZ commented on code in PR #5687:
URL: https://github.com/apache/hive/pull/5687#discussion_r1986367661
##########
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java:
##########
@@ -409,8 +411,12 @@ public void
preAlterTable(org.apache.hadoop.hive.metastore.api.Table hmsTable, E
context.getProperties().get(OLD_TABLE_NAME)).toString());
}
if (commitLock == null) {
- commitLock = new MetastoreLock(conf, new CachedClientPool(conf,
Maps.fromProperties(catalogProperties)),
- catalogProperties.getProperty(Catalogs.NAME), hmsTable.getDbName(),
hmsTable.getTableName());
+ if (HiveTableOperations.hiveLockEnabled(null, conf)) {
Review Comment:
I think, HiveIcebergMetaHook should always use MetastoreLock.
what if Hive conf is set to `NO_LOCK`, but the user has overridden it on the
table level to `METASTORE_LOCK`? That would break the transaction isolation.
`METASTORE_LOCK` is a stronger one that checks if `metadataLocation` hasn't
changed.
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