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Posted to oak-issues@jackrabbit.apache.org by "Thomas Mueller (JIRA)" <ji...@apache.org> on 2015/05/28 10:45:17 UTC
[jira] [Updated] (OAK-2926) Fast result size estimate
[ https://issues.apache.org/jira/browse/OAK-2926?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Mueller updated OAK-2926:
--------------------------------
Description:
When asking for the correct result size of a query, the complete result needs to be read, so that access rights checks are made, and (unless the index is known to be up-to-date, and can process all conditions) so that the existence and all query conditions are checked.
Jackrabbit 2.x supports a fast way to get an estimate of the result size, without doing access rights checks. See also JCR-3858.
Please note that according to the JCR API, NodeIterator.getSize() may return -1 (for "unknown"), and in Oak this is currently done if counting is slow. This would also need to be disabled if a fast result size estimate is needed.
was:
When asking for the correct result count of a query, the complete result needs to be read, so that access rights checks are made, and (unless the index is known to be up-to-date, and can process all conditions) so that the existence and all query conditions are checked.
Jackrabbit 2.x supports a fast way to get an estimate of the result count, without doing access rights checks. See also JCR-3858.
Please note that according to the JCR API, NodeIterator.getSize() may return -1 (for "unknown"), and in Oak this is currently done if counting is slow. This would also need to be disabled if a fast result count estimate is needed.
Summary: Fast result size estimate (was: Fast result count estimate)
> Fast result size estimate
> -------------------------
>
> Key: OAK-2926
> URL: https://issues.apache.org/jira/browse/OAK-2926
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: query
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
>
> When asking for the correct result size of a query, the complete result needs to be read, so that access rights checks are made, and (unless the index is known to be up-to-date, and can process all conditions) so that the existence and all query conditions are checked.
> Jackrabbit 2.x supports a fast way to get an estimate of the result size, without doing access rights checks. See also JCR-3858.
> Please note that according to the JCR API, NodeIterator.getSize() may return -1 (for "unknown"), and in Oak this is currently done if counting is slow. This would also need to be disabled if a fast result size estimate is needed.
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