Apache服务器在尝试执行Java时崩溃

这是错误报告：

[Sat Jan 21 12:07:50.518064 2017] [mpm_event:notice] [pid 8928:tid 139985251233280] AH00491: caught SIGTERM, shutting down
[Sat Jan 21 12:07:51.400192 2017] [wsgi:warn] [pid 9240:tid 139692690144768] mod_wsgi: Compiled for Python/2.7.11.
[Sat Jan 21 12:07:51.400309 2017] [wsgi:warn] [pid 9240:tid 139692690144768] mod_wsgi: Runtime using Python/2.7.12+.
[Sat Jan 21 12:07:51.405286 2017] [mpm_event:notice] [pid 9240:tid 139692690144768] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.3.0 Python/2.7.12+ configured -- resuming normal operations
[Sat Jan 21 12:07:51.405340 2017] [core:notice] [pid 9240:tid 139692690144768] AH00094: Command line: '/usr/sbin/apache2'
[Sat Jan 21 12:08:02.453647 2017] [wsgi:error] [pid 9245:tid 139692552484608] Invoked on Sat Jan 21 12:07:57 UTC 2017 with arguments: -loadClassifier /var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/classifiers/english.all.3class.distsim.crf.ser.gz -textFile /tmp/tmpb53bnN -outputFormat slashTags -tokenizerFactory edu.stanford.nlp.process.WhitespaceTokenizer -tokenizerOptions "tokenizeNLs=false" -encoding utf8
[Sat Jan 21 12:08:02.454348 2017] [wsgi:error] [pid 9245:tid 139692552484608] tokenizerFactory=edu.stanford.nlp.process.WhitespaceTokenizer
[Sat Jan 21 12:08:02.454365 2017] [wsgi:error] [pid 9245:tid 139692552484608] tokenizerOptions="tokenizeNLs=false"
[Sat Jan 21 12:08:02.454381 2017] [wsgi:error] [pid 9245:tid 139692552484608] loadClassifier=/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/classifiers/english.all.3class.distsim.crf.ser.gz
[Sat Jan 21 12:08:02.454388 2017] [wsgi:error] [pid 9245:tid 139692552484608] encoding=utf8
[Sat Jan 21 12:08:02.454392 2017] [wsgi:error] [pid 9245:tid 139692552484608] textFile=/tmp/tmpb53bnN
[Sat Jan 21 12:08:02.454397 2017] [wsgi:error] [pid 9245:tid 139692552484608] outputFormat=slashTags
[Sat Jan 21 12:08:02.454415 2017] [wsgi:error] [pid 9245:tid 139692552484608] 
[Sat Jan 21 12:08:02.472037 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001] [2017-01-21 12:08:02,461] ERROR in app: Exception on / [GET]
[Sat Jan 21 12:08:02.472087 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001] Traceback (most recent call last):
[Sat Jan 21 12:08:02.472093 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1982, in wsgi_app
[Sat Jan 21 12:08:02.472099 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     response = self.full_dispatch_request()
[Sat Jan 21 12:08:02.472104 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1614, in full_dispatch_request
[Sat Jan 21 12:08:02.472109 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     rv = self.handle_user_exception(e)
[Sat Jan 21 12:08:02.472113 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1517, in handle_user_exception
[Sat Jan 21 12:08:02.472118 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     reraise(exc_type, exc_value, tb)
[Sat Jan 21 12:08:02.472122 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1612, in full_dispatch_request
[Sat Jan 21 12:08:02.472126 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     rv = self.dispatch_request()
[Sat Jan 21 12:08:02.472131 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1598, in dispatch_request
[Sat Jan 21 12:08:02.472135 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     return self.view_functions[rule.endpoint](**req.view_args)
[Sat Jan 21 12:08:02.472140 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/var/www/FlaskApp/FlaskApp/__init__.py", line 34, in homepage
[Sat Jan 21 12:08:02.472163 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     NERtagger.tag(testy.split())
[Sat Jan 21 12:08:02.472169 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/nltk/tag/stanford.py", line 71, in tag
[Sat Jan 21 12:08:02.472173 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     return sum(self.tag_sents([tokens]), [])
[Sat Jan 21 12:08:02.472177 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/nltk/tag/stanford.py", line 94, in tag_sents
[Sat Jan 21 12:08:02.472182 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     stdout=PIPE, stderr=PIPE)
[Sat Jan 21 12:08:02.472186 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]   File "/usr/local/lib/python2.7/dist-packages/nltk/internals.py", line 134, in java
[Sat Jan 21 12:08:02.472190 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001]     raise OSError('Java command failed : ' + str(cmd))
[Sat Jan 21 12:08:02.472195 2017] [wsgi:error] [pid 9245:tid 139692552484608] [client 141.69.97.198:10001] OSError: Java command failed : [u'/usr/bin/java', '-mx1000m', '-cp', '/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/stanford-ner.jar:/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/stanford-ner-3.7.0-javadoc.jar:/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/stanford-ner-3.7.0-sources.jar:/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/stanford-ner-3.7.0.jar:/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/lib/jollyday-0.4.9.jar:/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/lib/joda-time.jar:/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/lib/stanford-ner-resources.jar', 'edu.stanford.nlp.ie.crf.CRFClassifier', '-loadClassifier', '/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/classifiers/english.all.3class.distsim.crf.ser.gz', '-textFile', '/tmp/tmpb53bnN', '-outputFormat', 'slashTags', '-tokenizerFactory', 'edu.stanford.nlp.process.WhitespaceTokenizer', '-tokenizerOptions', '"tokenizeNLs=false"', '-encoding', 'utf8']

服务器配置： 512 MB内存/20 GB磁盘/NYC3-Ubuntu 16.10 x64

我认为问题的出现是因为JVM无法运行只有512MB内存的文件。当我尝试从apache服务器（其中安装了Java和Python）执行时，就会出现问题：

english.all.3class.distsim.crf.ser.gz是一个大文件，大小为38MB。这段代码在我的笔记本电脑上运行得很好，我的笔记本电脑有i7/16 gb内存。但是没有在我的在线服务器上运行，它只有512MB内存。如果我尝试使用大小为48 kb的自定义小尺寸ner-customModel.ser.gz，代码将在服务器中运行

 testy = request.args.get('query')
  path_to_model = "/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/custom/ner-customModel.ser.gz"
  path_to_jar = "/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/stanford-ner.jar"
  NERtagger = StanfordNERTagger(path_to_model, path_to_jar)
  tagging=NERtagger.tag(testy.split())

---

我认为问题不在于Stanford库，因为这两个代码在我的笔记本电脑python安装中运行良好，而后面的代码也在我的服务器中运行。只有在我尝试执行大的ser stanford-ner-2016-10-31.ser.gz（38MB）时，才会产生错误。我认为在这种情况下，JVM会尝试使用更多的ram。有什么办法解决这个问题吗？

斯坦福大学正在使用java？从python中启动java听起来是一件奇怪的事情..不管怎样：您能发布的输出吗？这是从您的错误日志中获取的。这就是apache遇到问题的地方，如果它“内存不足”，则此命令的输出应显示我正在使用DigitalOcean cloud，并且nano终端不允许我将此代码粘贴到终端中。我试着写，但这行字本身就很大。我通过创建交换文件解决了这个问题。非常感谢你的帮助！斯坦福大学用Java和目标语言Java开发了这个NER。但是它有一个与python一起使用的接口。你能在下面把你的解决方案作为一个答案来帮助其他遇到同样问题的人吗？那么斯坦福大学正在使用java？从python中启动java听起来是一件奇怪的事情..不管怎样：您能发布的输出吗？这是从您的错误日志中获取的。这就是apache遇到问题的地方，如果它“内存不足”，则此命令的输出应显示我正在使用DigitalOcean cloud，并且nano终端不允许我将此代码粘贴到终端中。我试着写，但这行字本身就很大。我通过创建交换文件解决了这个问题。非常感谢你的帮助！斯坦福大学用Java和目标语言Java开发了这个NER。但是它有一个与python一起使用的接口。你能在下面将你的解决方案作为答案发布出来，以帮助遇到同样问题的其他人吗？

 testy = request.args.get('query')
  path_to_model = "/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/custom/ner-customModel.ser.gz"
  path_to_jar = "/var/www/FlaskApp/FlaskApp/StanFordNer/stanford-ner-2016-10-31/stanford-ner.jar"
  NERtagger = StanfordNERTagger(path_to_model, path_to_jar)
  tagging=NERtagger.tag(testy.split())