Konstantinov, yes, perhaps, though I can't think where. This is a small 
app, about 950 lines of code. There is a limited number of places where I 
can make such a mistake. I do aggregate a lot of data into an atom, and I'm 
sure there is a lot of contention around the atom, but the Socket timeout 
errors are surely some weird AWS or ElasticSearch thing. 



On Thursday, October 5, 2017 at 2:12:42 PM UTC-4, Lubomir Konstantinov 
wrote:
>
> Holding to a head somewhere perhaps?
>
> On Thursday, 5 October 2017 19:32:11 UTC+3, lawrence...@gmail.com wrote:
>>
>> One last thing, I should mention, if I go through and add " LIMIT 100 " 
>> to all the SQL queries, everything works great. That is, when dealing with 
>> a few hundred documents, the app seems to work perfectly, and there are no 
>> errors. It's only when I try to work with a few million documents that 
>> things fall apart. I suspect some kind of contention arises... somewhere. 
>> Possibly in several locations. But I'm not yet sure what the problem is. 
>>
>>
>>
>> On Wednesday, October 4, 2017 at 12:49:12 AM UTC-4, lawrence...@gmail.com 
>> wrote:
>>>
>>> This is probably a stupid question, but is there an obvious way to get 
>>> an error message out of Elastisch? I had an app that was working with 
>>> MongoDB and I was then told I had to use ElasticSearch instead (something 
>>> about only using AWS for everything) so now I'm trying to get an error 
>>> message, because my code doesn't seem to work. I read through here without 
>>> seeing anything obvious: 
>>>
>>> http://clojureelasticsearch.info/articles/getting_started.htm
>>>
>>> I rewrote my MongoDB function, so it should work with Elastisch: 
>>>
>>> (defn push-item-to-persistence
>>>   [item db]
>>>   (let [
>>>         denormalized-id (get-in item [:denormalized-id] :no-id)
>>>         item (assoc item :updated-at (temporal/current-time-as-datetime))
>>>         item (assoc item :permanent-holding-id-for-item-instances 
>>> (java.util.UUID/randomUUID))
>>>         item (assoc item :instance-id-for-this-one-item 
>>> (java.util.UUID/randomUUID))
>>>         item (assoc item :item-type :deduplication)
>>>         ]
>>>     (if (= denormalized-id :no-id)
>>>       (slingshot/throw+ {
>>>                          :type 
>>> ::no-denormalized-id-in-push-item-into-database
>>>                          :item item
>>>                          })
>>>       (slingshot/try+
>>>        (put conn index mapping-type id document)
>>>        (esd/put db "facts-over-time" "deduplicaton" (str 
>>> denormalized-id) item)
>>>        (println " done with put in push-item-to-persistence ")
>>>        (catch Object o
>>>          (slingshot/throw+ {
>>>                             :type ::push-item-to-persistence
>>>                             :error o
>>>                             :item item
>>>                             :db db
>>>                             }
>>>                            ))))))
>>>
>>>
>>> It doesn't seem that any documents are getting into ElasticSearch. I was 
>>> hoping to the (throw) would reveal to me some useful debugging information, 
>>> but that doesn't seem to happen. 
>>>
>>> The connection appears to be valid, as I can do this:
>>>
>>>                  (let [conn (persistence/multi-thread-start config)
>>>                        res  (esd/search conn "facts-over-time" 
>>> "deduplication" :query {:match_all {}})
>>>                        n    (esrsp/total-hits res)
>>>                        hits (esrsp/hits-from res)]
>>>                    (clojure.pprint/pprint res))
>>>
>>> and I get: 
>>>
>>> {:took 1,
>>>  :timed_out false,
>>>  :_shards {:total 5, :successful 5, :failed 0},
>>>  :hits {:total 0, :max_score nil, :hits []}}
>>>
>>> So the connection is there. But no records are. 
>>>
>>>
>>>

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