The root cause for the fail is that there must be a flush for `BufferedOutputStream` before getting the `pos` of the file, otherwise the data length is wrongly calculated.
------------- Commit messages: - 8275021: Test serviceability/sa/TestJmapCore.java fails Changes: https://git.openjdk.java.net/jdk/pull/5890/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5890&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8275021 Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod Patch: https://git.openjdk.java.net/jdk/pull/5890.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5890/head:pull/5890 PR: https://git.openjdk.java.net/jdk/pull/5890