Files locked by JVM in pendingMDN folder - OpenAS2 v4.8.2

[claudiodegioannibme]

Hi,

I am reaching out because we are encountering a file-locking issue after upgrading our environment to OpenAS2 v4.8.2.

The Issue
Files are getting stuck in the pendingMDN directory. It appears that the JVM itself maintains an active lock on these files even after the initial processing attempt.

• Symptoms: When we try to manually delete these files from the Operating System, we receive an error stating: "File in use by OpenJDK Platform binary".
• Workaround: The files are only released and become deletable after we restart the OpenAS2 service.
• Impact: This prevents the cleanup process and eventually fills up the pending directory, requiring manual intervention.
• Self-Locking: OpenAS2's own cleanup routines are unable to move or delete the files because they are locked by the process itself.

Environment

• OpenAS2 Version: 4.8.2
• Java Version: OpenJDK Runtime Environment Temurin 21.07
• OS: windows server 2019

Has anyone else experienced this with version 4.8.2? Are there any new settings or known bugs regarding file handle management in this release?

Any suggestions or patches would be greatly appreciated.

[uhurusurfa]

Nobody has reported an y issues like this.
Are you seeing any WARN or ERROR level messages in the logs related to the cleanup of files?

[uhurusurfa]

Also, are you using ASYNC or SYNC MDN?

[claudiodegioannibme]

Reply below

[uhurusurfa]

One more thing - do the files that are getting stuck have ".object" extension or no extension?

[claudiodegioannibme]

Hi Christopher,

We receive the following error message

2026-05-07 10:16:34.203 [AS2DirectoryPollingModule] INFO  org.openas2.processor.sender.AS2SenderModule - Connecting to: http://ditechas2.ditechonline.it:6260/as2 [<07052026101634+0200-7ffd36bf-e5e5-4419-9684-2b151a081f68@06606230156_C$3735752491>]
2026-05-07 10:16:34.378 [DirectoryResenderModule] ERROR org.openas2.util.AS2Util - Error moving file to \\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\ : Failed to delete original file 'D:\OpenAS2v2\OpenAS2\.\config\..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227' after copy to '\\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227'
java.io.IOException: Failed to delete original file 'D:\OpenAS2v2\OpenAS2\.\config\..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227' after copy to '\\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227'
	at org.apache.commons.io.FileUtils.moveFile(FileUtils.java:2578)
	at org.apache.commons.io.FileUtils.moveFile(FileUtils.java:2549)
	at org.openas2.util.IOUtil.moveFile(IOUtil.java:221)
	at org.openas2.util.AS2Util.cleanupFiles(AS2Util.java:799)
	at org.openas2.util.AS2Util.resend(AS2Util.java:365)

2026-05-07 10:16:34.379 [DirectoryResenderModule] ERROR org.openas2.util.AS2Util - File cleanup unable to delete the locally stored version of the pending MSG file: D:\OpenAS2v2\OpenAS2\.\config\..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227
java.nio.file.FileSystemException: D:\OpenAS2v2\OpenAS2\.\config\..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227: The process cannot access the file because it is being used by another process
	at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
	at java.base/sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:273)
	at java.base/sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:105)
	at java.base/java.nio.file.Files.delete(Files.java:1153)
	at org.openas2.util.IOUtil.deleteFile(IOUtil.java:256)
	at org.openas2.util.AS2Util.cleanupFiles(AS2Util.java:815)
	at org.openas2.util.AS2Util.resend(AS2Util.java:365)
	at org.openas2.processor.sender.AS2SenderModule.resend(AS2SenderModule.java:264)
	at org.openas2.processor.sender.AS2SenderModule.handle(AS2SenderModule.java:156)

The current configuration is as follows:

<partnership name="AAAAA-BBBB">
        <sender name="AAAAA"/>
        <receiver name="BBBB"/>
        <attribute name="protocol" value="as2"/>
        <attribute name="subject" value="From AAAAA to BBBB"/>
        <attribute name="as2_url" value="http://XXX.XXX.XXX.XXX:10080/bdbd/AS2Controller"/>
        <attribute name="as2_mdn_to" value="http://YYYY.YYYY.YYYY.YYYY:10080"/>
        <attribute name="as2_mdn_options" value="signed-receipt-protocol=optional, pkcs7-signature; signed-receipt-micalg=optional, SHA256"/>
        <attribute name="encrypt" value="3DES"/>
        <attribute name="sign" value="SHA256"/>
        <attribute name="mdnsubject" value="Your requested MDN response from $receiver.as2_id$"/>
        <attribute name="no_chunked_max_size" value="$properties.chunk_max_file_size$"/>
    </partnership>

The only file present is 07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227, which has no extension."

[claudiodegioannibme]

Hi,

I am adding an item; this only happens in the event of a transmission error once all retry attempts have been exhausted.

2026-05-07 11:53:34.200 [DirectoryResenderModule] ERROR org.openas2.util.AS2Util - Message abandoned after retry limit reached. [<07052026114304+0200-d2066130-6695-47ff-bade-0be9f3320a5d@ALDI_UK_A$3735776283>]

[uhurusurfa]

Ah!! I had been building a reply which asked this and only just saw this comment.
Can you confirm the question at the bottom of the comment I last posted please.

[claudiodegioannibme]

Yes i confirm the error comes in cleanup files

[uhurusurfa]

Does this happen with all files sent or only the ones that end up in the resender module (this particular example is a file that is being resent via the DirectoryResenderModule thread as indicated in the log message prefix)?

The code that controls the creation of the pending file as well as the code that does the cleanup do not open a file handle directly on the cleanup files but instead uses the Apache Commons FileUtils commands.

Apaches moveFile actuallly uses a copyfile then delete in your case. This is the Apache method:

    public static void moveFile(final File srcFile, final File destFile, final CopyOption... copyOptions) throws IOException {
        Objects.requireNonNull(destFile, "destFile");
        checkFileExists(srcFile, "srcFile");
        requireAbsent(destFile, "destFile");
        final boolean rename = srcFile.renameTo(destFile);
        if (!rename) {
            // Don't interfere with file date on move, handled by StandardCopyOption.COPY_ATTRIBUTES
            copyFile(srcFile, destFile, false, copyOptions);
            if (!srcFile.delete()) {
                deleteQuietly(destFile);
                throw new IOException("Failed to delete original file '" + srcFile + "' after copy to '" + destFile + "'");
            }
        }
    }

I have searched on this issue more generally and there do seem to be reported issues using Apache Commons FileUtils when the destination is a Windows network drive.

Can you confirm that the file actually does exist in the target network file system:
\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227

[claudiodegioannibme]

The issue it' related to https://issues.apache.org/jira/browse/IO-544 ?
What is the issue ?

[uhurusurfa]

Can you upload any other log file entries containing this string:
07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29

[claudiodegioannibme]

2026-05-07 09:44:43.285 [AS2DirectoryPollingModule] INFO org.openas2.processor.receiver.MessageBuilderModule - File assigned to message: 07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227 [<07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227>]
2026-05-07 09:44:43.285 [AS2DirectoryPollingModule] INFO org.openas2.processor.sender.AS2SenderModule - Message sender invoked for log ID: [<07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227>]
2026-05-07 09:44:43.290 [AS2DirectoryPollingModule] INFO org.openas2.processor.sender.AS2SenderModule - Save Original mic & message id information into file: D:\OpenAS2v2\OpenAS2.\config/../data/pendinginfoMDN3/07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227 [<07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227>]
2026-05-07 09:44:43.292 [AS2DirectoryPollingModule] INFO org.openas2.processor.sender.AS2SenderModule - Connecting to: http://77.243.178.120:10080/SeeburgerAS2/AS2Controller [<07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227>]
2026-05-07 09:45:04.301 [AS2DirectoryPollingModule] INFO org.openas2.util.AS2Util - Renamed pending info file : 07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227 :::: New name: 07052026094504+0200-aa4a6d1e-ca7a-4315-ad92-13905565e638@ALDI_UK_A$3735739227 [<07052026094504+0200-aa4a6d1e-ca7a-4315-ad92-13905565e638@ALDI_UK_A$3735739227>]
2026-05-07 10:16:34.378 [DirectoryResenderModule] ERROR org.openas2.util.AS2Util - Error moving file to \tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\ : Failed to delete original file 'D:\OpenAS2v2\OpenAS2.\config..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227' after copy to '\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227'
java.io.IOException: Failed to delete original file 'D:\OpenAS2v2\OpenAS2.\config..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227' after copy to '\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227'
2026-05-07 10:16:34.379 [DirectoryResenderModule] ERROR org.openas2.util.AS2Util - File cleanup unable to delete the locally stored version of the pending MSG file: D:\OpenAS2v2\OpenAS2.\config..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227
java.nio.file.FileSystemException: D:\OpenAS2v2\OpenAS2.\config..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227: The process cannot access the file because it is being used by another process

This is the extract

[uhurusurfa]

Please can you confirm that the file actually existed on the file system:
D:\OpenAS2v2\OpenAS2.\config..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227

From my perspective, this log message is the key to what the real problem is:
2026-05-07 09:45:04.301 [AS2DirectoryPollingModule] INFO org.openas2.util.AS2Util - Renamed pending info file : 07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227 :::: New name: 07052026094504+0200-aa4a6d1e-ca7a-4315-ad92-13905565e638@ALDI_UK_A$3735739227 [<07052026094504+0200-aa4a6d1e-ca7a-4315-ad92-13905565e638@ALDI_UK_A$3735739227>]

So in fact the file was not moved because it no longer existed.
I will run a test to verify this is the issue as soon as I can but please confirm what the name of the file was that was left in the directory.

[claudiodegioannibme]

We have extracted log for file IT10181220152J$3735919002, which is currently located in the pendingMDN directory. You can find the logs attached below.

I have two questions: Was the file successfully copied to the destination folder once the MDN was received?

16:06:42.147 [AS2DirectoryPollingModule] INFO  org.openas2.processor.sender.AS2SenderModule -- Connecting to: http://rochediabetescare.tesi-scm.net:4080/ [07052026160642+0200@IT10181220152J$3735919002]
16:06:42.238 [AS2DirectoryPollingModule] INFO  org.openas2.processor.sender.AS2SenderModule -- Message sent and response received in 88 milliseconds [07052026160642+0200@IT10181220152J$3735919002]
16:06:42.240 [AS2DirectoryPollingModule] INFO  org.openas2.util.AS2Util -- Partner rochediagnostics_scm_fa_prod responded with MDN [automatic-action/MDN-sent-automatically; processed] [07052026160642+0200@IT10181220152J$3735919002]
16:06:42.244 [AS2DirectoryPollingModule] INFO  org.openas2.processor.sender.AS2SenderModule -- Message sent and response received in 1297 milliseconds [07052026160640+0200@PLAT_NSO_G$3735917419]
16:06:42.272 [AS2DirectoryPollingModule] INFO  org.openas2.util.AS2Util -- Message sent and MDN received successfully.
16:06:42.283 [AS2DirectoryPollingModule] INFO  org.openas2.util.AS2Util -- Partner HOLLISTERCUSTOMP responded with MDN [automatic-action/MDN-sent-automatically; processed] [07052026160640+0200@PLAT_NSO_G$3735917419]
16:06:42.289 [AS2DirectoryPollingModule] INFO  org.openas2.util.AS2Util -- Message sent and MDN received successfully.
16:06:42.343 [AS2DirectoryPollingModule] ERROR org.openas2.util.AS2Util -- Error moving file to \\tesinas01\eint_stor\gruppotesi\datasite\orxt\Ds_Dati\rochegiagnosticsscm\prod\fa\sent\ : Failed to delete original file 'D:\Tesisquare\OpenAS2\pendingMDN3\07052026160642+0200@IT10181220152J$3735919002' after copy to '\\tesinas01\eint_stor\gruppotesi\datasite\orxt\Ds_Dati\rochegiagnosticsscm\prod\fa\sent\07052026160642+0200@IT10181220152J$3735919002'
java.io.IOException: Failed to delete original file 'D:\Tesisquare\OpenAS2\pendingMDN3\07052026160642+0200@IT10181220152J$3735919002' after copy to '\\tesinas01\eint_stor\gruppotesi\datasite\orxt\Ds_Dati\rochegiagnosticsscm\prod\fa\sent\07052026160642+0200@IT10181220152J$3735919002'
    at org.apache.commons.io.FileUtils.moveFile(FileUtils.java:2578)
    at org.apache.commons.io.FileUtils.moveFile(FileUtils.java:2549)
    at org.openas2.util.IOUtil.moveFile(IOUtil.java:221)
    at org.openas2.util.AS2Util.cleanupFiles(AS2Util.java:799)
    at org.openas2.util.AS2Util.processMDN(AS2Util.java:620)
    at org.openas2.processor.sender.AS2SenderModule.processResponse(AS2SenderModule.java:240)
    at org.openas2.processor.sender.AS2SenderModule.sendMessage(AS2SenderModule.java:209)
    at org.openas2.processor.sender.AS2SenderModule.handle(AS2SenderModule.java:134)
    at org.openas2.processor.DefaultProcessor.handle(DefaultProcessor.java:55)
    at org.openas2.processor.receiver.MessageBuilderModule.processDocument(MessageBuilderModule.java:241)
    at org.openas2.processor.receiver.MessageBuilderModule.processDocument(MessageBuilderModule.java:122)
    at org.openas2.processor.receiver.DirectoryPollingModule.processFile(DirectoryPollingModule.java:309)
    at org.openas2.processor.receiver.DirectoryPollingModule.processSingleFile(DirectoryPollingModule.java:212)
    at org.openas2.processor.receiver.DirectoryPollingModule.updateTracking(DirectoryPollingModule.java:288)
    at org.openas2.processor.receiver.DirectoryPollingModule.poll(DirectoryPollingModule.java:122)
    at org.openas2.processor.receiver.PollingModule$PollTask.run(PollingModule.java:61)
    at java.base/java.util.TimerThread.mainLoop(Timer.java:566)
    at java.base/java.util.TimerThread.run(Timer.java:516)
16:06:42.344 [AS2DirectoryPollingModule] ERROR org.openas2.util.AS2Util -- File cleanup unable to delete the locally stored version of the pending MSG file: D:\Tesisquare\OpenAS2\pendingMDN3\07052026160642+0200@IT10181220152J$3735919002
java.nio.file.FileSystemException: D:\Tesisquare\OpenAS2\pendingMDN3\07052026160642+0200@IT10181220152J$3735919002: The process cannot access the file because it is being used by another process
    at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
    at java.base/sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:273)
    at java.base/sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:105)
    at java.base/java.nio.file.Files.delete(Files.java:1153)
    at org.openas2.util.IOUtil.deleteFile(IOUtil.java:256)
    at org.openas2.util.AS2Util.cleanupFiles(AS2Util.java:815)
    at org.openas2.util.AS2Util.processMDN(AS2Util.java:620)
    at org.openas2.processor.sender.AS2SenderModule.processResponse(AS2SenderModule.java:240)
    at org.openas2.processor.sender.AS2SenderModule.sendMessage(AS2SenderModule.java:209)
    at org.openas2.processor.sender.AS2SenderModule.handle(AS2SenderModule.java:134)
    at org.openas2.processor.DefaultProcessor.handle(DefaultProcessor.java:55)
    at org.openas2.processor.receiver.MessageBuilderModule.processDocument(MessageBuilderModule.java:241)
    at org.openas2.processor.receiver.MessageBuilderModule.processDocument(MessageBuilderModule.java:122)
    at org.openas2.processor.receiver.DirectoryPollingModule.processFile(DirectoryPollingModule.java:309)
    at org.openas2.processor.receiver.DirectoryPollingModule.processSingleFile(DirectoryPollingModule.java:212)
    at org.openas2.processor.receiver.DirectoryPollingModule.updateTracking(DirectoryPollingModule.java:288)
    at org.openas2.processor.receiver.DirectoryPollingModule.poll(DirectoryPollingModule.java:122)
    at org.openas2.processor.receiver.PollingModule$PollTask.run(PollingModule.java:61)
    at java.base/java.util.TimerThread.mainLoop(Timer.java:566)
    at java.base/java.util.TimerThread.run(Timer.java:516)

[claudiodegioannibme]

Here the configuration

<partnership name="TESIEINT2015-rochediabetes_scm_fa_prod">
        <sender name="TESIEINT2015"/>
        <receiver name="rochediabetes_scm_fa_prod"/>
        <attribute name="protocol" value="as2"/>
        <attribute name="subject" value="xxx"/>
        <attribute name="as2_url" value="http://xxx:4080/"/>
        <attribute name="as2_mdn_to" value="http://xxx:8081/"/>
        <attribute name="as2_mdn_options" value="none"/>
        <attribute name="no_chunked_max_size" value="$properties.chunk_max_file_size$"/>
        <attribute name="as2_message_id_format" value="$properties.tesi_as2_message_id_format$"/>
        <attribute name="as2_message_id_enclose_in_brackets" value="false"/>
    </partnership>

[uhurusurfa]

There seems to be multiple possible issues going on here so lets try to narrow it down.
Please can you run a test on your system to rule out the Apache library being the problem using this test code:
CopyTest.java

Prep for the test:

• Save the CopyTest.java file to a test directory on your Windows server running OpenAS2
• Oopen a terminal (DOS window or pwershell) and change to the directory you downloaded the CopyTest.java file to

Then run these commands:

• javac -cp "D:\Tesisquare\OpenAS2\lib\commons-io-2.21.0.jar" CopyTest
• java -cp ".:D:\Tesisquare\OpenAS2\lib\commons-io-2.21.0.jar" CopyTest move "CopyTest.java" "\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\CopyTest.java"

Please post the output if there are errors.

[claudiodegioannibme]

PS D:\OpenAS2v2\OpenAS2\test_copia> D:\OpenAS2v2\jdk-21.0.7+6\bin\java -cp ".;D:\OpenAS2v2\OpenAS2\lib\commons-io-2.21.0.jar" CopyTest move "CopyTest.java" "\\tesinas01\eint_stor\POC_Crittografia\CopyTest.java"
Trying Java NIO mechanism...

Moving file...
        Source file: CopyTest.java
        Destination file: \\tesinas01\eint_stor\POC_Crittografia\CopyTest.java


Trying Apache FileUtils mechanism...

Moving file...
        Source file: CopyTest.java
        Destination file: \\tesinas01\eint_stor\POC_Crittografia\CopyTest.java
Exception in thread "main" org.apache.commons.io.FileExistsException: File element in parameter 'destFile' already exists: '\\tesinas01\eint_stor\POC_Crittografia\CopyTest.java'
        at org.apache.commons.io.FileUtils.requireAbsent(FileUtils.java:2857)
        at org.apache.commons.io.FileUtils.moveFile(FileUtils.java:2571)
        at org.apache.commons.io.FileUtils.moveFile(FileUtils.java:2549)
        at CopyTest.main(CopyTest.java:36)

[uhurusurfa]

I have modified the original file to create separate files for the NIO and Apache FileUtils tests.

Please do the same steps with this file:
CopyTest.java

[claudiodegioannibme]

D:\OpenAS2v2\OpenAS2\test_copia>D:\OpenAS2v2\jdk-21.0.7+6\bin\java -cp ".;D:\OpenAS2v2\OpenAS2\lib\commons-io-2.21.0.jar" CopyTest move "CopyTest.java" "\tesinas01\eint_stor\POC_Crittografia\CopyTest.java"
Trying Java NIO mechanism...

Moving file...
Source file: CopyTest.java.nio
Destination file: CopyTest.java.nio

Java NIO mechanism FAILED.

java.nio.file.AtomicMoveNotSupportedException: CopyTest.java.nio -> \tesinas01\eint_stor\POC_Crittografia\CopyTest.java.nio: The system cannot move the file to a different disk drive
at java.base/sun.nio.fs.WindowsFileCopy.move(WindowsFileCopy.java:326)
at java.base/sun.nio.fs.WindowsFileSystemProvider.move(WindowsFileSystemProvider.java:291)
at java.base/java.nio.file.Files.move(Files.java:1431)
at CopyTest.main(CopyTest.java:22)

Trying Apache FileUtils mechanism...

Moving file...
Source file: CopyTest.java.afu
Destination file: CopyTest.java.nio
SUCCESS: Source file no longer exists in source: CopyTest.java.afu

D:\OpenAS2v2\OpenAS2\test_copia>

The destination folder

[uhurusurfa]

In your post 5 days ago the error message is:
2026-05-07 10:16:34.378 [DirectoryResenderModule] ERROR org.openas2.util.AS2Util - Error moving file to \\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\ : Failed to delete original file 'D:\OpenAS2v2\OpenAS2\.\config\..\data\pendingMDN3\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227' after copy to '\\tesinas01\eint_stor\gruppotesi\datasite\orxt\ds_dati\culina\error_prod\07052026094443+0200-4bd484d4-ed52-4bb7-a453-d0dce003aa29@ALDI_UK_A$3735739227'

Note that it is using 2 backslash characters for the destination file system: \tesinas01\eint_stor...

In your test you only used 1 backslash: \tesinas01\eint_stor...

Per Windows documentation, it is supposed to only be a single "".

I assume if you use 2 then it will fail to move the file.

Can you confirm that the configuration is correct on your OpenAS2 errordir in config.xml?

[claudiodegioannibme]

Hi Christopher,

The double backslash \ is correct since it's a UNC path. The display issue is just a Markdown error.

[uhurusurfa]

Ah ok.
So it seems that there is no issue with Apache FileUtils.

I will make an debug version that synchronizes the access to the cleanupFiles method in case this is a thread issue with a race condition associated.
I will also add a bit more logging to facilitate debugging.

[claudiodegioannibme]

Hi Christopher,

do you have an update ?

regs

[uhurusurfa]

I have a few things going on that is holding this up. Will have something by early next week.

[uhurusurfa]

Please try the attached jar which synchrniozes access to the cleanup of files and uses the try-with mechanism to ensure streams are closed.

openas2-server-4.8.3.jar.zip

Additionally, please set this attribute in your openas2.properties file if you are using it:
resend_requires_new_message_id=false

Otherwise put it in the <properties> element in the config.xml:
resend_requires_new_message_id="false"

[uhurusurfa]

NOTE: You must completely remove the old openas2 server jar from your installation otherwise it will continue to use the old one.

[claudiodegioannibme]

OK thank you i perform some test

[claudiodegioannibme]

Hi Christopher,

Were you able to reproduce the issue I reported? I would like to perform a test before deploying to production, as it is currently the only environment where the problem persists.

regs

[uhurusurfa]

I was unable to reproduce on Linux or OSX.
I have a feeling it has something to do with the network drive though unclear why.
Testing on a machine that has the same or similar network drive for storing failures too would be the best chance of reproducing the issue..

[uhurusurfa]

Any update on this?

[claudiodegioannibme]

We are setting up tests in the production environment to reproduce the issue, and we will let you know the results.

[claudiodegioannibme]

Hey Christopher,

we tested your modified version. I'm attaching the logs here.
It worked fine in a few cases, but sometimes we get the error 'The process cannot access the file'.
Could you check it out?
regs
log_openas2.txt

[uhurusurfa]

It looks like the file move is definitely flaky and I need you to run this test file attached to see if we can get it to fail.

CopyTest.java

Prep for the test:

Save the CopyTest.java file to a test directory on your Windows server running OpenAS2
Open a terminal (DOS window or powershell) and change to the directory you downloaded the CopyTest.java file to

Then run this command a few times (replacing [destination directory on the network file system] with a valid network directory:

javac -cp "D:\Tesisquare\OpenAS2\lib\commons-io-2.21.0.jar" CopyTest [destination directory on the network file system]

If there are any errors reported then run this command a few times:
java -cp ".:D:\Tesisquare\OpenAS2\lib\commons-io-2.21.0.jar" CopyTest [destination directory on the network file system] true

You will have to delete the files it creates in the destination network file system before re-running the test.

Let me know if there are errors.

[uhurusurfa]

Any luck with this?

[claudiodegioannibme]

Hi,

I executed the test and received no errors. There are 100 files of 1 KB each in the destination folder.

Regs

[uhurusurfa]

Unless I can reproduce this issue, I am unclear how to resolve it.
What is clear that the problem is not consistent as you get some that successfully move the files and some that do not.

For now I will add a retry loop in the move method that will sleep for a configurable amount of time then retry once if there is a failure.

If you can figure out a way to make the error happen consistently then I could work on a fix but for now that seems the best I can come up with.

I will release the adjusted algorithm for the move in the next day or so.

[uhurusurfa]

@claudiodegioannibme - having thought a lot more about this, it does not make sense to retry since the file is locked by something and per your feedback, it requires a restart to unlock it.

I am now thinking that perhaps the initial calls to the atomic move method (uses Java NIO) before trying the Apaches move method is somehow locking the file.

So I have created another test class that has a copy of the full moveFile method implemented in org.openas2.IOUtil but with the logging removed to see if calling that method a significant number of times will produce the error.

This is the new file:
CopyTest.java

Please run the same way as previously.
Run it a few times if you do not initially get any error.

If you do eventually get an error then try running it with the additional "true" command line parameter which will use a more "intelligent" method that tries to pick the right move mechanism based on the file system types and file system proders of the source and destination.

[claudiodegioannibme]

Hi,
I ran several tests using the test program you mentioned.
I used a script to execute the program 30 times in a row, but the error never occurred. I've attached the logs from a sample execution.

resg
Uploading registro_log.txt…

[uhurusurfa]

Ok - I have run out of ideas on how to identify the underlying problem at this point.
There is a code change in the 4.8.3 release relating to retry management that may solve your problem but no guarantees.

For the v5 release, the retry process has been significantly rewritten and the number of files tracked has been reduced and should result in a more reliable and debuggable process.

[claudiodegioannibme]

Ok I try the 4.8.3