Michał Mela created METAMODEL-89:
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Summary: Racing condition in CsvDataContext
Key: METAMODEL-89
URL: https://issues.apache.org/jira/browse/METAMODEL-89
Project: Metamodel
Issue Type: Bug
Affects Versions: 4.2.0-incubating
Reporter: Michał Mela
There seems to be a racing condition in the method that creates a temp file for
CsvDataContexts constructed with an InputStream:
CsvDataContext.createFileFromInputStream(InputStream inputStream, String
encoding)
For example, if in thread 1 we get to line 243 while in thread 2 we get to line
240, then, basically, in both threads we have made _sure_ that a file for *the
same index in both of the threads* doesn't exist. Then both threads will use
the same filename and one thread will overrride the data for another thread's
tempfile.
(the file line numbers were based on this listing:
http://grepcode.com/file/repo1.maven.org/maven2/org.eobjects.metamodel/MetaModel-csv/3.4.11/org/eobjects/metamodel/csv/CsvDataContext.java#CsvDataContext)
The immediate result is that in a thread whose tempfile was overwritten the
data context will be created based on wrong data.
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