maheshk114 commented on a change in pull request #613: HIVE-20967
URL: https://github.com/apache/hive/pull/613#discussion_r281906378
##########
File path:
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/HiveAlterHandler.java
##########
@@ -805,22 +811,89 @@ public Partition alterPartition(RawStore msdb, Warehouse
wh, String catName, Str
return oldParts;
}
- private void checkTableTypeConversion(Database db, Table oldTbl, Table
newTbl)
+ // Validate changes to partition's location to protect against errors on
migration during
+ // replication
+ private void blockPartitionLocationChangesOnReplSource(Database db, Table
tbl,
+ EnvironmentContext ec)
+ throws InvalidOperationException {
+ // If the database is not replication source, nothing to do
+ if (!ReplChangeManager.isSourceOfReplication(db)) {
+ return;
+ }
+
+ // For now validate only the changes when strict managed tables is false.
That's when there's
+ // scope for migration during replication, at least for now.
+ if
(conf.getBoolean(MetastoreConf.ConfVars.STRICT_MANAGED_TABLES.getHiveName(),
false)) {
+ return;
+ }
+
+ // Do not allow changing location of a managed table as as alter event
doesn't capture the
+ // new files list. So, it may cause data inconsistency.
+ boolean isChangingLocation = false;
+ if (ec.isSetProperties()) {
+ String alterType = ec.getProperties().get(ALTER_TABLE_OPERATION_TYPE);
+ if (alterType != null && alterType.equalsIgnoreCase(ALTERLOCATION)) {
Review comment:
add " &&
tbl.getTableType().equalsIgnoreCase(TableType.MANAGED_TABLE.name() . " and
throw exception
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