Hi Sven, Many thanks for your answer and ultra fast response!
On Tue, Nov 16, 2021 at 11:40 PM Sven Meier <s...@meiers.net> wrote: > Hi Ernesto, > > I'm no expert in this, but as I understood it FileChannel should be save > to be written to in parallel: > > > https://docs.oracle.com/javase/1.5.0/docs/api/java/nio/channels/FileChannel.html > > "File channels are safe for use by multiple concurrent threads. ... > Only one operation that involves the channel's position or can change > its file's size may be in progress at any given time; attempts to > initiate a second such operation while the first is still in progress > will block until the first operation completes. ... The view of a file > provided by an instance of this class is guaranteed to be consistent > with other views of the same file provided by other instances in the > same program." > > This sounds related though: > > > https://stackoverflow.com/questions/45441249/why-does-java-filechannel-truncate-fail-predictably-on-windows-only Yes I hit some other posts similar to this one. We have other team members looking at this too and any answer they found we will come back to you. If there is anything that can be improved at wicket level (e.g. documentation on how to use this in windows) we will share what we found. Many thanks again! > > > Regards > Sven > > > On 16.11.21 19:56, Ernesto Reinaldo Barreiro wrote: > > Hi Sven, > > > > Many thanks for your answer. Main problem is I do not have Windows > > around... this happens only in our Jenkins (which needs to be a windows > > machine). I did some googling around and it seems it can be the operating > > system itself if you access the same file in a very fast sequence: this > > might be our case, as we are generating many web sockets messages > (pushing > > components) and this seems to trigger page serialization. > > > > On Linux and Mac we have no problems at all. > > > > > > On Tue, Nov 16, 2021 at 7:28 PM Sven Meier <s...@meiers.net> wrote: > > > >> Hi Ernesto, > >> > >> maybe an issue with concurrent file writes? > >> > >> I've tested the new FilePageStore on Linux only, and as it seems I > >> didn't add any synchronization to it. > >> > >> Could you try out FilePageStoreTest? > >> > >> Regards > >> Sven > >> > >> > >> On 16.11.21 16:18, Ernesto Reinaldo Barreiro wrote: > >>> Hi, > >>> > >>> We are trying to use FilePageStore and we are getting following > >>> exception (a lot of them actually) > >>> > >>> he requested operation cannot be performed on a file with a user-mapped > >>> section open > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92) > >>> ~[?:?] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103) > >>> ~[?:?] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108) > >>> ~[?:?] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > sun.nio.fs.WindowsFileSystemProvider.newFileChannel(WindowsFileSystemProvider.java:121) > >>> ~[?:?] > >>> [2021-11-16T07:34:00.699Z] at > >>> java.nio.channels.FileChannel.open(FileChannel.java:298) ~[?:?] > >>> [2021-11-16T07:34:00.699Z] at > >>> java.nio.channels.FileChannel.open(FileChannel.java:357) ~[?:?] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > org.apache.wicket.pageStore.FilePageStore.writeFile(FilePageStore.java:188) > >>> [wicket-core-9.6.0.jar:9.6.0] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > org.apache.wicket.pageStore.FilePageStore.addPersistedPage(FilePageStore.java:178) > >>> [wicket-core-9.6.0.jar:9.6.0] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > org.apache.wicket.pageStore.AbstractPersistentPageStore.addPage(AbstractPersistentPageStore.java:128) > >>> [wicket-core-9.6.0.jar:9.6.0] > >>> [2021-11-16T07:34:00.699Z] at > >>> > >> > org.apache.wicket.pageStore.AsynchronousPageStore$PageAddingRunnable.run(AsynchronousPageStore.java:292) > >>> [wicket-core-9.6.0.jar:9.6.0] > >>> [2021-11-16T07:34:00.699Z] at java.lang.Thread.run(Thread.java:833) > [?:?] > >>> > >>> This does not happen for other operating systems. Is this a known > >>> limitation? Is there anything else that needs to be configured at > >> operating > >>> system level? > >>> > >>> Thanks in advance. > >>> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > >> For additional commands, e-mail: users-h...@wicket.apache.org > >> > >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > > -- Regards - Ernesto Reinaldo Barreiro
