Occasional query test failures

Our Hudson build caught a query test issue that I just saw also on a local checkout. See the Hudson report for details:

http://hudson.zones.apache.org/hudson/view/Jackrabbit/job/Jackrabbit-trunk/org.apache.jackrabbit$jackrabbit-core/818/testReport/

Most of the test errors look like this:

junit.framework.AssertionFailedError: /testroot/node1 is not part of the result set
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.Assert.assertTrue(Assert.java:20)
at org.apache.jackrabbit.test.api.query.AbstractQueryTest.checkResult(AbstractQueryTest.java:342)
at org.apache.jackrabbit.test.api.query.AbstractQueryTest.executeSqlQuery(AbstractQueryTest.java:320)
at org.apache.jackrabbit.test.api.query.SQLJoinTest.testJoinNtBase(SQLJoinTest.java:103)

There's also the following failure, though I'm not sure if the problems are related:

javax.jcr.ItemNotFoundException: failed to build path of 73a2730b-151c-425d-87fe-f4c9b1885b2f: 14eaf724-275f-4a59-aed1-3fcbd7eca88b has no child entry for 73a2730b-151c-425d-87fe-f4c9b1885b2f
at org.apache.jackrabbit.core.HierarchyManagerImpl.buildPath(HierarchyManagerImpl.java:291)
at org.apache.jackrabbit.core.CachingHierarchyManager.buildPath(CachingHierarchyManager.java:198)
at org.apache.jackrabbit.core.HierarchyManagerImpl.getPath(HierarchyManagerImpl.java:395)
at org.apache.jackrabbit.core.CachingHierarchyManager.getPath(CachingHierarchyManager.java:232)
at org.apache.jackrabbit.core.query.lucene.RowIteratorImpl$RowImpl.getValue(RowIteratorImpl.java:340)
at org.apache.jackrabbit.commons.query.GQL$RowAdapter.getValue(GQL.java:1016)
at org.apache.jackrabbit.core.query.AbstractQueryTest.checkResultSequence(AbstractQueryTest.java:235)
at org.apache.jackrabbit.core.integration.GQLTest.testOrder(GQLTest.java:60)