Nitin-Kashyap commented on code in PR #27784:
URL: https://github.com/apache/doris/pull/27784#discussion_r1414212209
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fe/fe-core/src/main/java/org/apache/doris/planner/external/FileQueryScanNode.java:
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@@ -372,7 +386,11 @@ public void createScanRangeLocations() throws
UserException {
curLocations.getScanRange().getExtScanRange().getFileScanRange().addToRanges(rangeDesc);
TScanRangeLocation location = new TScanRangeLocation();
Backend selectedBackend;
- if (enableSqlCache) {
+ int bucketNum = 0;
+ if (isBucketedHiveTable) {
+ bucketNum =
HiveBucketUtil.getBucketNumberFromPath(fileSplit.getPath().getName()).getAsInt();
+ selectedBackend = backendPolicy.getNextConsistentBe(bucketNum);
Review Comment:
It is to ensure the left side goes to the same BE where the right side hash
will send, given that Hive may replicate the same block on different remote
nodes.
I kept this thinking we can extend this to Colocate Join; by reading left
and right buckets on same BE. (I'm prototyping this, shall share soon)
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