sankarh commented on a change in pull request #579: HIVE-21109 : Support stats
replication for ACID tables.
URL: https://github.com/apache/hive/pull/579#discussion_r269098036
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File path: ql/src/java/org/apache/hadoop/hive/ql/exec/DDLTask.java
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@@ -2689,7 +2689,19 @@ private int alterTable(Hive db, AlterTableDesc
alterTbl) throws HiveException {
} else {
// Note: this is necessary for UPDATE_STATISTICS command, that
operates via ADDPROPS (why?).
// For any other updates, we don't want to do txn check on
partitions when altering table.
- boolean isTxn = alterTbl.getPartSpec() != null && alterTbl.getOp() ==
AlterTableTypes.ADDPROPS;
+ boolean isTxn = false;
+ if (alterTbl.getPartSpec() != null && alterTbl.getOp() ==
AlterTableTypes.ADDPROPS) {
+ // ADDPROPS is used to add repl.last.id during replication. That's
not a transactional
+ // change.
+ Map<String, String> props = alterTbl.getProps();
+ if (props.size() <= 1 &&
props.get(ReplicationSpec.KEY.CURR_STATE_ID.toString()) != null) {
+ isTxn = false;
+ } else {
+ isTxn = true;
+ }
+ }
+ // TODO: Somehow we have to signal alterPartitions that it's part of
replication and
+ // should use replication's valid writeid list instead of creating
one.
Review comment:
What do you mean by replication's valid writeid list in this comment? Even
in repl flow, we get validWriteIdList from HMS based on incoming writeId in the
event msg. Are you suggesting to cache this ValidWriteIdList somewhere and use
it instead of invoking HMS API?
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