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I have a problem with mapDB version 1.0.6. When i create a database i end up with two files with the same name but with different file types.

One is for example IRTree with file type FILE and the other is IRTree with file type .p
Having said that, whenever i try to read my database providing a filename IRTree i end up with an exception:

NullPointerException with the command DBMaker.newFileDB(new File(filename)).readOnly().make(); or an IOException: storage header is invalid.

Can anyone explain to me what's going on?

NullReferenceException
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Bill Soumakis
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1 Answers1

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MapDB uses two files. .P file is used to store data. Always open file without extension, otherwise it will try to open incorrect file.

Jan Kotek
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