decster opened a new pull request #3462: URL: https://github.com/apache/incubator-doris/pull/3462
This commit adds a hash index implementation for memory engine, it maps uint64_t hashcode(key) to uint32_t rowid(value). This hash index is different from the classical hash table in many ways: 1. To save memory usage, it does store value (only rowid), user need to follow the rowid and get the actual rowkey and check rowkey equality. 2. Only support insertion, no delete support 3. One writer/multi-reader concurrency support It's specially designed for the memory storage engine. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
