Unusual number of open files after running a Pipeline script

Issue

After running a Pipeline script, build slave agent or Jenkins master has a unusual number of open FIFO files. These are not linked to a process anymore.

Environment

  • JDK 6
  • Pipeline plugin

Resolution

On JDK6, garbage collector is not always collecting open FIFO correctly. Closing these descriptors might require a major garbage collection.

Customer are advised to upgrade to JDK 7 or 8 to fix this issue. Please take a look at our supported JDKs page.

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