com.liferay.petra.process.ProcessException: java.io.IOException: Broken pipe error during indexation process

Issue

• We have configured the text extraction functionality in an external process using the configuration:

text.extraction.fork.process.enabled=true
text.extraction.fork.process.mime.types=application/x-tika-ooxml,application/pdf

• But when we try to execute a reindexation process, the execution of the external process is not working, following error is thrown:

2023-01-13 11:05:00.849 ERROR [default-13][FileImpl:483] com.liferay.petra.process.ProcessException: java.io.IOException: Broken pipe
com.liferay.petra.process.ProcessException: java.io.IOException: Broken pipe
    at com.liferay.petra.process.local.LocalProcessExecutor.execute(LocalProcessExecutor.java:122)
    at com.liferay.portal.util.FileImpl.lambda$extractText$0(FileImpl.java:441)
    at com.liferay.registry.internal.RegistryImpl.callService(RegistryImpl.java:71)
    at com.liferay.portal.util.FileImpl.extractText(FileImpl.java:437)
    at com.liferay.portal.kernel.util.FileUtil.extractText(FileUtil.java:165)
    at com.liferay.portal.kernel.search.DocumentImpl.addFile(DocumentImpl.java:159)
    at com.liferay.document.library.internal.search.spi.model.index.contributor.DLFileEntryModelDocumentContributor.contribute(DLFileEntryModelDocumentContributor.java:114)

[ommited]

    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.io.IOException: Broken pipe
    at java.base/java.io.FileOutputStream.writeBytes(Native Method)
    at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354)
    at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
    at java.base/java.io.BufferedOutputStream.write(BufferedOutputStream.java:127)
    at java.base/java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1873)
    at java.base/java.io.ObjectOutputStream$BlockDataOutputStream.write(ObjectOutputStream.java:1844)
    at java.base/java.io.ObjectOutputStream.write(ObjectOutputStream.java:708)
    at java.base/java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1873)
    at java.base/java.io.ObjectOutputStream$BlockDataOutputStream.writeByte(ObjectOutputStream.java:1911)
    at java.base/java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1572)
    at java.base/java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
    at com.liferay.petra.process.local.LocalProcessExecutor.execute(LocalProcessExecutor.java:97)

How can I fix this error?

Environment

• Liferay DXP 7.3

Resolution

• The text extraction functionality in an external process executes the java process that is available in the system PATH of the Liferay user.
• The reported error com.liferay.petra.process.ProcessException: java.io.IOException: Broken pipe can be produced if the java binary that is available in the system PATH is not the same as the java binary used by the application server.
• To check this:
  
  1. Open a shell session using the same system user used to execute the application server
  2. Execute which java to locate the available java binary in the PATH environment (use where java in Windows environments)
  3. Execute ps -ef | grep java to get the java binary path used by the application server (use Task Manager in Windows)
  4. Check that both java binary paths are the same.
• If they don't match, to fix it, change the system PATH configuration in order to point to the same java binary as the one of the application server or change the configuration to the application server if it is using the wrong java binary