Han Jiang created LUCENE-4283: --------------------------------- Summary: Support more frequent skip with Block Postings Format Key: LUCENE-4283 URL: https://issues.apache.org/jira/browse/LUCENE-4283 Project: Lucene - Core Issue Type: Improvement Reporter: Han Jiang Priority: Minor
This change works on the new bulk branch. Currently, our BlockPostingsFormat only supports skipInterval==blockSize. Every time the skipper reaches the last level 0 skip point, we'll have to decode a whole block to read doc/freq data. Also, a higher level skip list will be created only for those df>blockSize^k, which means for most terms, skipping will just be a linear scan. If we increase current blockSize for better bulk i/o performance, current skip setting will be a bottleneck. For ForPF, the encoded block can be easily splitted if we set skipInterval=32*k. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org