wangxianbin created KYLIN-1684:
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Summary: query on table "kylin_sales" return empty resultset after
cube "kylin_sales_cube" which generated by sample.sh is ready
Key: KYLIN-1684
URL: https://issues.apache.org/jira/browse/KYLIN-1684
Project: Kylin
Issue Type: Bug
Components: Query Engine
Affects Versions: v1.5.1
Environment: cluster:
hadoop-2.6.0
hbase-0.98.8
hive-0.14.0
Reporter: wangxianbin
Assignee: liyang
there is a check for "InputRecords" in CubeStorageQuery search method which
seem like unnecessary, as follow:
List<CubeSegmentScanner> scanners = Lists.newArrayList();
for (CubeSegment cubeSeg :
cubeInstance.getSegments(SegmentStatusEnum.READY)) {
CubeSegmentScanner scanner;
if (cubeSeg.getInputRecords() == 0) {
logger.info("Skip cube segment {} because its input record is
0", cubeSeg);
continue;
}
scanner = new CubeSegmentScanner(cubeSeg, cuboid, dimensionsD,
groupsD, metrics, filterD, !isExactAggregation);
scanners.add(scanner);
}
if (scanners.isEmpty())
return ITupleIterator.EMPTY_TUPLE_ITERATOR;
return new SequentialCubeTupleIterator(scanners, cuboid, dimensionsD,
metrics, returnTupleInfo, context);
this check will cause query return empty resultset, even there is data in
storage engine.
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