[WICKET-3910] o.a.w.pageStore.AsynchronousDataStore#getData() returns null if the StoreEntryRunnable is currently running

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5-RC5.1
• Fix Version/s: 1.5-RC6
• Component/s: wicket
• Environment: Hostspot 1.6.0_26, 1.5.0_22
• Assignee: Martin Tzvetanov Grigorov
• Reporter: Attila Király
• Created: 16/Jul/11 12:29
• Updated: 20/Jul/11 11:15
• Resolved: 19/Jul/11 08:31

Description

I am running "mvn clean package" on the command line and based on the jdk I get different results (reproducable).

With jdk6 the test fails and the following is logged:
ERROR - DiskDataStoreTest - data[] should never be null
ERROR - DiskDataStoreTest - Detected error number: 1
ERROR - DiskDataStoreTest - data[] should never be null
ERROR - DiskDataStoreTest - Detected error number: 2
Exception in thread "Thread-22" java.lang.NullPointerException
at org.apache.wicket.page.persistent.disk.DiskDataStoreTest$Read1Runnable.run(DiskDataStoreTest.java:231)
at java.lang.Thread.run(Thread.java:662)
Exception in thread "Thread-42" java.lang.NullPointerException
at org.apache.wicket.page.persistent.disk.DiskDataStoreTest$Read2Runnable.run(DiskDataStoreTest.java:264)
at java.lang.Thread.run(Thread.java:662)

With jdk5 everything goes fine and above message is not logged.

The datastore in the test is returning null in the Read1Runnable and Read2Runnable which is causing the NPE.