Expiring map from MapMaker reports total size of the map not the current size

[GoogleCodeExporter]

I have the following

Map<String,Lock> locks = new MapMaker()
           .concurrencyLevel(4)
           .expireAfterWrite(5, TimeUnit.MINUTES)
           .makeComputingMap(
               new Function<String, Lock>()
               {
                 public Lock apply(String key)
                 {
                   return new ReentrantLock();
                 }
               });

After adding entries and waiting long enough that the entries are expired 
calling locks.size() seems to return the size of the Map at its greatest size 
not the current size of the Map.

Original issue reported on code.google.com by craig.skinfill on 11 Aug 2011 at 5:21

[GoogleCodeExporter]

The size of the map will only be updated on writes, or on occasional reads. So 
if you stop using the map it is true that its size will be inaccurate.

Original comment by fry@google.com on 12 Aug 2011 at 2:10

• Changed state: WorkingAsIntended

[GoogleCodeExporter]

Note that Cache.cleanUp can now help with this problem.

Original comment by yrfselrahc@gmail.com on 2 Sep 2011 at 11:22

[GoogleCodeExporter]

This issue has been migrated to GitHub.

It can be found at https://github.com/google/guava/issues/<id>

Original comment by cgdecker@google.com on 1 Nov 2014 at 4:15

• Added labels: MigratedToGitHub

[GoogleCodeExporter]

Original comment by cgdecker@google.com on 3 Nov 2014 at 9:09

• Added labels: Restrict-AddIssueComment-Commit