This PR suggests we use a sparse file when the Zip64SizeTest writes a ZIP file with a 5GB entry.
The size requirement of this test is known to cause problems in some builds, see [JDK-8259866](https://bugs.openjdk.org/browse/JDK-8259866) Using a sparse file reduces the disk space requirements of running the test from 5GB to 12K and also reduces the runtime from ~35 seconds to ~3 seconds on my Macbook Pro. ------------- Commit messages: - Add a missing "when" in Javadocs for SparseOutputStream - Remove introduced blank line - Remove double whitespace - Rewrite Zip64SizeTest to write to a sparse file Changes: https://git.openjdk.org/jdk/pull/12948/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12948&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8303891 Stats: 91 lines in 1 file changed: 56 ins; 17 del; 18 mod Patch: https://git.openjdk.org/jdk/pull/12948.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12948/head:pull/12948 PR: https://git.openjdk.org/jdk/pull/12948
