surekhasaharan commented on issue #6826: Concurrency bug in DruidSchema.refreshSegmentsForDataSource() URL: https://github.com/apache/incubator-druid/issues/6826#issuecomment-452821612 Thanks @leventov , I want to clarify that even if `segment` is removed, the reference to `segment` is still there. So where do you think, it can cause a NPE ? Though a null check for `dataSourceSegments` can be added before `SegmentMetadataHolder holder = dataSourceSegments.get(segment);`. Does that address your concern ?
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