How do I check whether an index exists or not using a python query?
I'm passing my index as a variable assigned outside the query as :-
i=int(datetime.datetime.now().strftime('%d'))+1 indextring="index" for m in range (i-10,i): d = datetime.datetime(2016, 10, m, 18, 00).strftime('%Y-%m-%d') index1=datestring+d subfix="_"+datetime.datetime(2016, 10, m, 18, 00).strftime('%Y-%m-%d') es=Elasticsearch(['localhost:9200']) res = **es.search(index='{0}'.format(index1)**, doc_type="log",size=10000, from_=0, body={ "query": { "match": { ....Match condition follows } } }})
Now, some of the index are not present for a particular date, however I want the process to run irrespective of that. I'm getting the following error when the index is not present-->
elasticsearch.exceptions.NotFoundError: TransportError(404, u'index_not_found_exception')
I'm not sure how the exception handling works in elasticsearch.
You can query localhost:9200/_status and that will give you a list of indices and information about each. The response will look something like this: { "ok" : true, "_shards" : { ... }, "indices" : { "my_index" : { ... }, "another_index" : { ... } } }
Python Check if List Index Exists Using Python len() Function. To check if a list index exists in a list using Python, the easiest way is to use the Python len() function. You can also check if an index exists using exception handling.
You have to call it on indices. Currently you are using exists of search class which tells you whether given document exists in the index and not the index itself.
Try this code
if es.indices.exists(index="index"): Your code for search
There are also more options if you want to use.
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