elasticsearch映射没有JSON对象错误

Question

我想使用python脚本csv2es将数据加载到elasticsearch 5。

传递给csv2es的参数通过elasticsearch映射引用一个json文件。装载时的映射文件如下：

{ 
"dynamic": "true", 
"properties": { 
    "username": {"type": “text”}, 
    "date": {"type": "date", "format" : "yyyy-MM-dd HH:mm"}, 
    "retweets": {"type": “integer”}, 
    "favourites": {"type": “integer”}, 
    "text": {"type": “text”}, 
    "geo": {"type": “keyword”}, 
    "mentions": {"type": “text”}, 
    "hashtags": {"type": “text”}, 
    "id": {"type": “keyword”}, 
    "permalink": {"type": “keyword”} 
    } 
} 

，这将引发以下错误：

Applying mapping from: csv2es_mappings.json 
Traceback (most recent call last): 
    File "/usr/local/bin/csv2es", line 11, in <module> 
    sys.exit(cli()) 
    File "/usr/local/lib/python2.7/site-packages/click/core.py", line 664, in  __call__ 
return self.main(*args, **kwargs) 
File "/usr/local/lib/python2.7/site-packages/click/core.py", line 644, in main 
rv = self.invoke(ctx) 
File "/usr/local/lib/python2.7/site-packages/click/core.py", line 837, in  invoke 
return ctx.invoke(self.callback, **ctx.params) 
File "/usr/local/lib/python2.7/site-packages/click/core.py", line 464, in invoke 
return callback(*args, **kwargs) 
File "/usr/local/lib/python2.7/site-packages/csv2es.py", line 206, in cli 
mapping = json.loads(f.read()) 
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.py", line 339, in loads 
return _default_decoder.decode(s) 
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 364, in decode 
obj, end = self.raw_decode(s, idx=_w(s, 0).end()) 
File "/usr/local/Cellar/python/2.7.12/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/decoder.py", line 382, in raw_decode 
raise ValueError("No JSON object could be decoded") 
ValueError: No JSON object could be decoded 

然而，当我打开以下文件中的数据加载运行。根据ES5映射的指导，我使用text和keyword而不是string-使用string时，字段未被正确拾取和索引。

{ 
"dynamic": "true", 
"properties": { 
    "username": {"type": "string"}, 
    "date": {"type": "date", "format" : "yyyy-MM-dd HH:mm"}, 
    "retweets": {"type": "string"}, 
    "favourites": {"type": "string"}, 
    "text": {"type": "string"}, 
    "geo": {"type": "string"}, 
    "mentions": {"type": "string"}, 
    "hashtags": {"type": "string"}, 
    "id": {"type": "string"}, 
    "permalink": {"type": "string"} 
    } 
} 

Answer 1

afaik，该错误表示您的json数据无效。 在“text”，那围绕着“left double quotation mark而不是"quotation mark。

升级你的python，所以你可以看到可读的错误，同时解码json字符串或使用simplejson库。

看到这个：Displaying better error message than "No JSON object could be decoded"