EMMA is unable to write coverage information from network server when it is
started in a separate process with default security policy
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Key: DERBY-3647
URL: https://issues.apache.org/jira/browse/DERBY-3647
Project: Derby
Issue Type: Test
Components: Test
Reporter: Vemund Østgaard
This report is based on discussion from DERBY-3445.
EMMA is unable to write coverage information from network server when it is
started in a separate process with default security policy.
Exceptions are typically like this:
[junit] java.security.AccessControlException: Access denied
(java.io.FilePermission coverage.ec read)
[junit] at
java.security.AccessController.checkPermission(AccessController.java:104)
[junit] at
java.lang.SecurityManager.checkPermission(SecurityManager.java:547)
[junit] at java.lang.SecurityManager.checkRead(SecurityManager.java:886)
[junit] at java.io.File.exists(File.java:726)
[junit] at com.vladium.emma.data.DataFactory.persist(DataFactory.java:525)
[junit] at com.vladium.emma.data.DataFactory.persist(DataFactory.java:86)
[junit] at
com.vladium.emma.rt.RTCoverageDataPersister.dumpCoverageData(RTCoverageDataPersister.java:54)
[junit] at com.vladium.emma.rt.RTExitHook.run(RTExitHook.java:32)
[junit] at java.lang.Thread.run(Thread.java:801)
[junit] Exception in thread "EMMA shutdown handler thread"
java.lang.RuntimeException: EMMA failed to dump coverage data:
java.security.AccessControlException: Access denied (java.io.FilePermission
coverage.ec read)
[junit] at
com.vladium.emma.rt.RTCoverageDataPersister.dumpCoverageData(RTCoverageDataPersister.java:71)
[junit] at com.vladium.emma.rt.RTExitHook.run(RTExitHook.java:32)
[junit] at java.lang.Thread.run(Thread.java:801)
The discussion in DERBY-3445 suggests a couple of solutions to be able to
expand on the default security policy so that the network server JVM will allow
EMMA to write the coverage data and thus improve the accuracy of the coverage
measurements.
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