Issue

• when an offline durable subscriber is timed out (offlineDurableSubscriberTimeout configured) periodically see the following WARNING message.

2015-XX-XX 13:45:08,472 [sage] Scheduler] - WARN  Topic                          - Failed to browse Topic: XXXXX
java.io.EOFException: Chunk stream does not exist, page: XX is marked free
    at org.apache.activemq.store.kahadb.disk.page.Transaction$2.readPage(Transaction.java:470)
    at org.apache.activemq.store.kahadb.disk.page.Transaction$2.<init>(Transaction.java:447)
    at org.apache.activemq.store.kahadb.disk.page.Transaction.openInputStream(Transaction.java:444)
    at org.apache.activemq.store.kahadb.disk.page.Transaction.load(Transaction.java:420)
    at org.apache.activemq.store.kahadb.disk.page.Transaction.load(Transaction.java:377)
    at org.apache.activemq.store.kahadb.disk.index.BTreeIndex.loadNode(BTreeIndex.java:266)
    at org.apache.activemq.store.kahadb.disk.index.BTreeIndex.getRoot(BTreeIndex.java:174)
    at org.apache.activemq.store.kahadb.disk.index.BTreeIndex.iterator(BTreeIndex.java:236)
    at org.apache.activemq.store.kahadb.MessageDatabase$MessageOrderIndex$MessageOrderIterator.<init>(MessageDatabase.java:3033)
    at org.apache.activemq.store.kahadb.MessageDatabase$MessageOrderIndex.iterator(MessageDatabase.java:2985)
    at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore$4.execute(KahaDBStore.java:564)
    at org.apache.activemq.store.kahadb.disk.page.Transaction.execute(Transaction.java:779)
    at org.apache.activemq.store.kahadb.KahaDBStore$KahaDBMessageStore.recover(KahaDBStore.java:558)
    at org.apache.activemq.store.ProxyTopicMessageStore.recover(ProxyTopicMessageStore.java:62)
    at org.apache.activemq.broker.region.Topic.doBrowse(Topic.java:589)
    at org.apache.activemq.broker.region.Topic.access$100(Topic.java:65)
    at org.apache.activemq.broker.region.Topic$6.run(Topic.java:722)