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https://issues.apache.org/jira/browse/KYLIN-1684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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wangxianbin updated KYLIN-1684:
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Attachment: log when run query.png
log for Build Base Cuboid Data.png
this is caused by hadoop history server is not running, after start hadoop
history server and rebuild cube, query work well.
> 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
> Attachments: log for Build Base Cuboid Data.png, log when run
> query.png
>
>
> 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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