Red Hat Bugzilla – Bug 1011539
[RFE] idlistscanlimit per index/type/value
Last modified: 2014-06-17 23:00:14 EDT
+++ This bug was initially created as a clone of Bug #1004876 +++ This bug is created as a clone of upstream ticket: https://fedorahosted.org/389/ticket/47504 With very large databases, some queries go through a lot of work to build huge ID lists for filter components with many matching IDs. For example, a search for (&(objectclass=inetorgperson)(uid=foo)) may build a huge idlist for objectclass=inetorgperson only to throw it away to intersect it with uid=foo. In these cases, it would be useful to be able to tell the indexing code to use a different idlistscanlimit for certain indexes, or use no idlist at all. In the above case, it would be useful to tell the indexing code to skip building an idlist for objectclass=inetorgperson, but still use the default idlistscanlimit for other objectclass searches (e.g. objectclass=groupOfNames). This would also help in https://fedorahosted.org/389/ticket/47474 - if there are several million IDs for each of the objectclass= filter components, being able to skip id list generation for the objectclass values would make that query very fast. We can't reuse nsslapd-idlistscanlimit, so perhaps a new attribute dn: cn=attrname,cn=index,... objectclass: nsIndex nsIndexIDSize: NNNN[:type][:eqvalue:eqvalue:...] Where NNNN is the max ID list size (or 0 for no list at all) type is the type of index (sub, pres, eq) eqvalue are for equality indexes - these are the values to which the max ID list size applies So in the case of ticket/47474, something like dn: cn=objectclass,... objectclass: nsIndex nsIndexType: eq nsIndexIDSize: 0:eq:organizationalPerson:inetOrgPerson:organization:organizationalUnit:groupOf Names:groupOfUniqueNames:group Would effectively disable id list generation for the objectclass values listed. Note that this will apply to _all_ queries for any of the objectclass values, not just their use in conjunction with this particular search filter.
Upstream ticket: https://fedorahosted.org/389/ticket/47504
Tests: ------------------------------------------------------------------------ r8138 | rmeggins@REDHAT.COM | 2013-09-24 11:32:56 -0600 (Tue, 24 Sep 2013) | 9 lines Tests for the new feature Fine Grained ID List Size new file filterscanlimit.sh tests have many positive and negative tests to test features and error handling tests pass with valgrind reporting no errors upstream ticket - https://fedorahosted.org/389/ticket/47504
As per comment #2, the test cases are already automated in filter test suite. Hence, marking the qe_test_coverage+ flag.
Automated test cases in TET for filter test suites are PASSing. Hence, marking the bug as Verified. Build tested - 389-ds-base-1.3.1.6-12 Snippets from the acceptance test report added /tet/tet/../data/DS/6.0/filter/en/fslindexconfig-errors.21.ldif added /tet/tet/../data/DS/6.0/filter/en/fslindexconfig-errors.22.ldif TestCase [fsl1] result-> [PASS] TestCase [fsl1] result-> [PASS] Test fsl2 - test various combinations of filters and idlistscanlimit loaded index config from /tet/tet/../data/DS/6.0/filter/en/fslindexconfig.ldif modifying entry cn=config TestCase [fsl2] result-> [PASS]
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.