[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[jira] [Created] (HBASE-20636) Introduce two bloom filter type : ROWPREFIX and ROWPREFIX_DELIMITED

Guangxu Cheng created HBASE-20636:

             Summary: Introduce two bloom filter type : ROWPREFIX and ROWPREFIX_DELIMITED
                 Key: HBASE-20636
             Project: HBase
          Issue Type: New Feature
          Components: regionserver
         Environment: As we all know, HBase uses BloomFilter(ROW and ROWCOL) to filter unnecessary files to improve read performance. But they only support Get and do not support Scan.

In our company(Tencent), many users need to scan all rows with the same prefix, such as Tencent Game. Game user's some operational record will be written into HBase, each game user will have a lot of records, the rowkey is constructed as userid+'#'+timestamps. So we can scan all records for a given user for a specified period.

For this scenario, we designed the prefix Bloom filter. If the startRow and stopRow of the Scan has a valid common prefix, the scan will be allowed to use BloomFilter to filter files which will enhance the performance of the scan.

Now, this feature has been running on our cluster over a year, and scan performance for this scenario has been improved by more than one times than before.
            Reporter: Guangxu Cheng
            Assignee: Guangxu Cheng

This message was sent by Atlassian JIRA