Some data may be lost when adding/removing entries with the same key
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Key: JCS-74
URL: https://issues.apache.org/jira/browse/JCS-74
Project: JCS
Issue Type: Bug
Components: Indexed Disk Cache
Reporter: Alexander Sofronov
Assignee: Aaron Smuts
I see this problem in jcs-1.3.3.5-RC.jar.
When adding/removing data to IndexedDiskCache some data may be lost.
Consider the following sample:
cache.put("key", "value1");
cache.put("key", "value2");
cache.put("key", "value3");
After running this code the cache often stores only "value1", other values may
be lost. It looks like this is caused by asynchronous cache update mechanism,
adding some pause (say Thread.sleep(100)) between different puts fixes the
problem.
Also (it may be another bug actually) it could happen that the following code
will not write any data to the cache:
cache.put("key", "value1");
cache.remove("key");
cache.put("key", "value2");
This happens non-deterministically on my machine, in case of problems with
reproducing this try put some other data before this test to make the queue
longer.
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