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https://issues.apache.org/jira/browse/KYLIN-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16822832#comment-16822832
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hejian commented on KYLIN-2849:
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[~Shaofengshi] Shaofeng, as desc in KYLIN-3964
> duplicate segment，cannot be deleted and data cannot be refreshed and merged
> ---------------------------------------------------------------------------
>
> Key: KYLIN-2849
> URL: https://issues.apache.org/jira/browse/KYLIN-2849
> Project: Kylin
> Issue Type: Bug
> Components: Job Engine, Metadata, REST Service
> Affects Versions: v2.0.0
> Environment: hadoop：hadoop-2.6.0-cdh5.8.2
> hive ：2.1.0
> hbase：0.98
> Reporter: scott.zhai
> Assignee: Dong Li
> Priority: Major
> Labels: scope
> Fix For: v2.3.0
>
> Attachments: kylin-1.png, kylin-2.png
>
>
> cube duplicate segments。
> cannot be deleted and data cannot be refreshed and merged
> {code}
> try
> curl -X DELETE
> "http://127.0.0.1:7070/kylin/api/cubes/Remain_Cube_2/segs/20170822000000_20170823000000";
> -H "Authorization: Basic QURNSU46S1lMSU4=" -H "Content-Type:
> application/json;charset=UTF-8"
> Cannot delete segment '20170822000000_20170823000000' as it is neither the
> first nor the last
> segment.","stacktrace":"org.apache.kylin.rest.exception.InternalErrorException:
> Cannot delete segment '20170822000000_20170823000000' as it is neither the
> first nor the last segment
> {code}
> 暂时解决办法：
> {code}
> public CubeInstance deleteSegment(CubeInstance cube, String segmentName)
> throws IOException {
> if (!segmentName.equals(cube.getSegments().get(0).getName()) &&
> !segmentName.equals(cube.getSegments().get(cube.getSegments().size() -
> 1).getName())) {
> //throw new IllegalArgumentException("Cannot delete segment '" +
> segmentName + "' as it is neither the first nor the last segment.");
> }
> CubeSegment toDelete = null;
> for (CubeSegment seg : cube.getSegments()) {
> if (seg.getName().equals(segmentName)) {
> toDelete = seg;
> }
> }
> if (toDelete == null) {
> throw new IllegalArgumentException("Cannot find segment '" +
> segmentName + "'");
> }
> if (toDelete.getStatus() != SegmentStatusEnum.READY) {
> //throw new IllegalArgumentException("Cannot delete segment '" +
> segmentName + "' as its status is not READY. Discard the on-going job for
> it.");
> }
> CubeUpdate update = new CubeUpdate(cube);
> update.setToRemoveSegs(new CubeSegment[] { toDelete });
> return CubeManager.getInstance(getConfig()).updateCube(update);
> }
> {code}
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