HTTPServerLoadTest hanging

[danielnaber]

I just had another case of HTTPServerLoadTest hanging, like #13. Unfortunately I made a mistake so I don't have a stacktrace this time. I'm now running the test again for a longer time, hopefully I can reproduce the issue.

[danielnaber]

I could just reproduce it with while true; do mvn test; done in languagetool-server. Here's the part of the stacktrace (kill -QUIT <pid>) that's probably relevant:

"pool-3-thread-6" prio=10 tid=0x00007f4c68007000 nid=0x2d7e runnable [0x00007f4ca3af8000]
   java.lang.Thread.State: RUNNABLE
    at java.util.HashMap.put(HashMap.java:473)
    at org.languagetool.tagging.disambiguation.MultiWordChunker.lazyInit(MultiWordChunker.java:92)
    at org.languagetool.tagging.disambiguation.MultiWordChunker.disambiguate(MultiWordChunker.java:106)
    at org.languagetool.tagging.disambiguation.pl.PolishHybridDisambiguator.disambiguate(PolishHybridDisambiguator.java:48)
    at org.languagetool.JLanguageTool.getAnalyzedSentence(JLanguageTool.java:755)
    at org.languagetool.JLanguageTool.analyzeSentences(JLanguageTool.java:578)
    at org.languagetool.JLanguageTool.check(JLanguageTool.java:551)
    at org.languagetool.JLanguageTool.check(JLanguageTool.java:511)
    at org.languagetool.JLanguageTool.check(JLanguageTool.java:507)
    at org.languagetool.server.LanguageToolHttpHandler.checkText(LanguageToolHttpHandler.java:231)
    at org.languagetool.server.LanguageToolHttpHandler.handle(LanguageToolHttpHandler.java:108)

"pool-3-thread-5" prio=10 tid=0x00007f4c68082000 nid=0x2d7d runnable [0x00007f4ca3bf9000]
   java.lang.Thread.State: RUNNABLE
    at java.util.HashMap.put(HashMap.java:473)
    at org.languagetool.tagging.disambiguation.MultiWordChunker.lazyInit(MultiWordChunker.java:92)
    at org.languagetool.tagging.disambiguation.MultiWordChunker.disambiguate(MultiWordChunker.java:106)
    at org.languagetool.tagging.disambiguation.pl.PolishHybridDisambiguator.disambiguate(PolishHybridDisambiguator.java:48)
    at org.languagetool.JLanguageTool.getAnalyzedSentence(JLanguageTool.java:755)
    at org.languagetool.JLanguageTool.analyzeSentences(JLanguageTool.java:578)
    at org.languagetool.JLanguageTool.check(JLanguageTool.java:551)
    at org.languagetool.JLanguageTool.check(JLanguageTool.java:511)
    at org.languagetool.JLanguageTool.check(JLanguageTool.java:507)
    at org.languagetool.server.LanguageToolHttpHandler.checkText(LanguageToolHttpHandler.java:231)
    at org.languagetool.server.LanguageToolHttpHandler.handle(LanguageToolHttpHandler.java:108)

[danielnaber]

@slotties Do you have time to take a look at this?

[slotties]

Sorry, I've been busy lately and just got to take a look on it.