Hello Tomasz,
Sounds reasonable, please see git master for the class
DefaultBackingStoreSupplier (or a SNAPSHOT build in the Apache SNAPSHOT Maven
repository:
https://repository.apache.org/content/repositories/snapshots/org/apache/commons/commons-compress/1.23-SNAPSHOT/),
and instead of:
final ParallelScatterZipCreator zipCreator = new ParallelScatterZipCreator();
Use:
final Path dir = Paths.get("target/custom-temp-dir");
Files.createDirectories(dir);
final ParallelScatterZipCreator zipCreator = new
ParallelScatterZipCreator(
Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()),
new DefaultBackingStoreSupplier(dir));
FWIW, I do not think we should add new constructors.
Gary
On 2023/01/12 08:28:54 Tomasz Bigosiński wrote:
> Hi,
>
> I have a question on using your Apache Commons Compress library. I would like
> to use it for my project and compress many files from some folder into one
> zip archive with multithreading.
>
> There is a sample code piece here Commons Compress - Commons Compress User
> Guide
> (apache.org)<https://commons.apache.org/proper/commons-compress/examples.html>
> ('Creating a zip file with multiple threads' section) and an article here
> java - How to implement Parallel Zip Creation with ScatterZipOutputStream
> with Zip64 Support? - Stack
> Overflow<https://stackoverflow.com/questions/54624695/how-to-implement-parallel-zip-creation-with-scatterzipoutputstream-with-zip64-su>.
>
> Eventually I managed to have this working inside my project's code, but I
> noticed that when writting into zip archive it first creates chunks in /tmp
> folder, which is not the best solution for me - I have rather big files to
> serve (hundreds of GB each) and it makes no sense for me to have /tmp folder
> too big on an everyday basis.
>
> So is there a way to force ParallelScatterZipCreator class to write temporary
> files to some other location, e.g. the same as the final archive?
>
> Regards,
> Tomasz Bigosinski
>
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