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Tian Jiang closed IOTDB-208. ---------------------------- > Add bloom filters to TsFile > --------------------------- > > Key: IOTDB-208 > URL: https://issues.apache.org/jira/browse/IOTDB-208 > Project: Apache IoTDB > Issue Type: New Feature > Reporter: Tian Jiang > Priority: Minor > Labels: pull-request-available > Fix For: 0.9.0-SNAPSHOT > > Time Spent: 20m > Remaining Estimate: 0h > > The recent readings remind me that the bloom filter is standard equipment in > K-VDBs. Although IoTDB is not one of them (at least not typically), the bloom > filter still helps a lot in various situations. For example, our recent > experiments gave us an illusion that the time series in a storage group > remains unchanged. However, that is not the case. > Naturally, in real situations, the number of time series grows over time, due > to reasons like adding new gears. The old files do not contain such a time > series. Without the help of bloom filters, we have to check each old file > only to find that there is no such time series. To my knowledge, this may > take a lot of time. > So, I suggest we add a bloom filter (or some more efficient one) to each > TsFile to help skip unwanted files. -- This message was sent by Atlassian Jira (v8.3.4#803005)