David Smiley created LUCENE-4932:
------------------------------------
Summary: DirectPostingsFormat can minimize binary searching in
seek's
Key: LUCENE-4932
URL: https://issues.apache.org/jira/browse/LUCENE-4932
Project: Lucene - Core
Issue Type: Improvement
Components: core/codecs
Reporter: David Smiley
I was looking at the DirectPostingsFormat to see exactly what it's doing when
you I seekExact(). It does a plain binary search every time, even if I've
positioned the state well into size of the array. A comment (probably left by
[~mikemccand]) shows that he too knows this could be done smarter:
{code}
// TODO: we should use the skip pointers; should be
// faster than bin search; we should also hold
// & reuse current state so seeking forwards is
// faster
{code}
This issue represents resolving that TODO so it's isn't forgotten.
For inspiration about solving this in a smarter way, see Solr's SortedIntDocSet
which avoids binary search using an approach that could be borrowed for this
codec.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
