Github user dilipbiswal commented on the issue:
https://github.com/apache/spark/pull/17679
@viirya Thank you for a quick fix. The change looks good to me. I have a
question. Before the fix, we changed the output partitioning of relation's
child. But how come it was not reflected on the plan ? If it was reflected on
the plan then we could quickly figure out whats wrong ? Here is the plan before
this fix.
```
*HashAggregate(keys=[item#245], functions=[count(1)], output=[item#245,
count#279L])
+- *HashAggregate(keys=[item#245], functions=[partial_count(1)],
output=[item#245, count#295L])
+- InMemoryTableScan [item#245]
+- InMemoryRelation [id#237, item#245], true, 10000,
StorageLevel(disk, memory, deserialized, 1 replicas)
+- *HashAggregate(keys=[id#237, item#245], functions=[],
output=[id#237, item#245])
+- Exchange hashpartitioning(id#237, item#245, 200)
+- *HashAggregate(keys=[id#237, item#245],
functions=[], output=[id#237, item#245])
+- *Project [id#237, group#227 AS item#245]
+- *BroadcastHashJoin [item#226], [item#236],
Inner, BuildRight
:- *Project [_1#223 AS item#226, _2#224 AS
group#227]
: +- *Filter isnotnull(_1#223)
: +- LocalTableScan [_1#223, _2#224]
+- BroadcastExchange
HashedRelationBroadcastMode(List(input[0, string, true]))
+- *Project [_1#233 AS item#236, _2#234 AS
id#237]
+- *Filter isnotnull(_1#233)
+- LocalTableScan [_1#233, _2#234]
```
Is there any indication on the plan that partitioning info got changed ?
Just want to learn :-)
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