[TIKA-3103] Tesseract fails to respect timeouts and clean up after itself

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 1.24.1
• Component/s: ocr
• Assignee: Unassigned
• Reporter: Radim Rehurek
• Created: 20/May/20 09:25
• Updated: 28/May/20 17:21

Description

We're using the Tika Server with OCR:

java -jar /opt/tika/tika-server-1.24.1.jar -p 9998 -spawnChild -JXmx500m

 

Two undersirable things happen:

1. The CPU runs at 100% for >10 minutes, long after any Tika requests have finished.

These processes show in top as "tesseract" (OCR) and consume all CPU cores at 100%.

They eventually die (or finish?) but the machine is unusable in the mean time.

Expected behaviour: Tika cleans up spawned processes after itself: at most after its timeout limit (which is 2 minutes I believe?)

2. The temp is full of files like:

root@38acd588ee22:/# ll /tmp/
total 197320
drwxrwxrwt 1 root root 24576 May 20 09:35 ./
drwxr-xr-x 1 root root 4096 May 20 08:40 ../
rw-rr- 1 root root 9273920 May 20 08:56 TIKA_streamstore_11144988934311367241.tmp
rw-rr- 1 root root 8938048 May 20 08:57 TIKA_streamstore_11649337406504198407.tmp
rw-rr- 1 root root 9478720 May 20 08:56 TIKA_streamstore_13551529918743702933.tmp
rw-rr- 1 root root 9151040 May 20 08:57 TIKA_streamstore_13568226047805501311.tmp
rw-rr- 1 root root 7701056 May 20 08:56 TIKA_streamstore_13908373602714189455.tmp
…
rw-rr- 1 root root 33367 May 20 08:55 apache-tika-11167866320029165062.tmp
rw-rr- 1 root root 44353 May 20 08:54 apache-tika-1152515137515755865.tmp
rw-rr- 1 root root 245279 May 20 08:52 apache-tika-12106368488659105236.tmp
rw-rr- 1 root root 1759 May 20 08:47 apache-tika-12291680472524021463.tmp

…

 

slowly filling up the disk.

Expected behaviour: Tika cleans up disk space after itself.

 

These bugs are critical for us. What's the best way to avoid them?