Cannot allocate new segment for dataSource conflicting segment

HI
kafka indexing service

I ndexerSQLMetadataStorageCoordinator:97 - Cannot allocate new segment for dataSource[useractive],

interval[2018-02-19T00:00:00.000Z/2018-02-26T00:00:00.000Z], maxVersion[2018-02-24T08:59:16.832Z]:

conflicting segment[useractive_2018-02-19T00:00:00.000Z_2018-02-20T00:00:00.000Z_2018-02-24T06:30:53.746Z_11].

,i hadoop batch meger,but i delete segement ,now segments

,What is the cause of the problem?