public final class: FieldCacheSanityChecker
Provides methods for sanity checking that entries in the FieldCache
are not wasteful or inconsistent.
Lucene 2.9 Introduced numerous enhancements into how the FieldCache
is used by the low levels of Lucene searching (for Sorting and
ValueSourceQueries) to improve both the speed for Sorting, as well
as reopening of IndexReaders. But these changes have shifted the
usage of FieldCache from "top level" IndexReaders (frequently a
MultiReader or DirectoryReader) down to the leaf level SegmentReaders.
As a result, existing applications that directly access the FieldCache
may find RAM usage increase significantly when upgrading to 2.9 or
Later. This class provides an API for these applications (or their
Unit tests) to check at run time if the FieldCache contains "insane"
usages of the FieldCache.
EXPERIMENTAL API: This API is considered extremely advanced and
experimental. It may be removed or altered w/o warning in future releases
|Nested Class Summary:|
|public static final class ||FieldCacheSanityChecker.Insanity ||Simple container for a collection of related CacheEntry objects that
in conjunction with each other represent some "insane" usage of the
|public static final class ||FieldCacheSanityChecker.InsanityType ||An Enumeration of the different types of "insane" behavior that
may be detected in a FieldCache. |
|Methods from java.lang.Object:|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait|