[KYLIN-3512] No need to enable kylin.storage.hbase.endpoint-compress-result when the query is related to count distinct of bitmap

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: Backlog
• Assignee: Zhong Yanghong
• Reporter: Zhong Yanghong
• Created: 24/Aug/18 09:48
• Updated: 24/Dec/18 07:34

Description

As we know, roaring bitmap will compress its contents. There's no need to use CompressionUtils.compress to compress again the results of each region, which is time consuming and whose compression ratio is low. One example is as follows:
                                  Etc message: start latency: 39@1,agg done@1094,cpuTime@1090,compress done@4245,server stats done@4246
                                  endpoint.CubeVisitService: Size of final result = 61,157,510 (64,725,324 before compressing)