# Query joining multiple datasources does not return
**URL:** https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753
**Category:** Uncategorized
**Created:** [February 13, 2018, 5:43am UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753 "2018-02-13T05:43:36Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@HLNA](https://community.dremio.com/u/HLNA)
#### Post date: [February 13, 2018, 5:43am UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753/1 "2018-02-13T05:43:36Z")
I am just doing a simple query in which I am joining the same small table (40 records) in different datasources.
The qry is like this:-
SELECT a.\*
FROM a JOIN b ON [a.id](http://a.id) = [b.id](http://b.id)
join c ON [a.id](http://a.id) = [c.id](http://c.id) (… and all other datasources)
WHERE [a.id](http://a.id) = 6666;
The server.log is stuck at this step
turn\_items e ON c.item\_id = e.item\_id\nWHERE c.item\_id = 51551446;",“start”:1518500045745,“finish”:1518500045759,“outcome”:“FAILED”,“username”:“admin”,“commandDescription”:""}
2018-02-12 21:34:12,904 [FABRIC-rpc-event-queue] INFO c.d.s.e.rpc.CoordToExecHandlerImpl - Received remote fragment start instruction for 257d872d-7195-b63c-1275-f4d26b21f100:0:0
2018-02-12 21:34:12,916 [FABRIC-rpc-event-queue] INFO c.d.s.e.rpc.CoordToExecHandlerImpl - Received remote fragment start instruction for 257d872d-7195-b63c-1275-f4d26b21f100:1:0
2018-02-12 21:34:12,925 [FABRIC-rpc-event-queue] INFO c.d.s.e.rpc.CoordToExecHandlerImpl - Received remote fragment start instruction for 257d872d-7195-b63c-1275-f4d26b21f100:2:0
2018-02-12 21:34:14,120 [e1 - 257d872d-7195-b63c-1275-f4d26b21f100:frag:2:0] INFO c.d.s.e.f.FragmentStatusReporter - 257d872d-7195-b63c-1275-f4d26b21f100:2:0: State to report: FINISHED
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### Author:  [@can](https://community.dremio.com/u/can)
#### Post date: [February 13, 2018, 9:16pm UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753/2 "2018-02-13T21:16:03Z")
@HLNA could you share the [query profile](https://www.dremio.com/tutorials/share-query-profile/) please?
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### Author:  [@HLNA](https://community.dremio.com/u/HLNA)
#### Post date: [February 14, 2018, 5:57am UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753/3 "2018-02-14T05:57:07Z")
Can is it possible to share the profile privately, without the forum?
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### Author:  [@kelly](https://community.dremio.com/u/kelly)
#### Post date: [February 14, 2018, 1:34pm UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753/4 "2018-02-14T13:34:21Z")
Yes, you can mail to can @ [dremio.com](http://dremio.com)
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### Author:  [@HLNA](https://community.dremio.com/u/HLNA)
#### Post date: [February 15, 2018, 3:35am UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753/5 "2018-02-15T03:35:10Z")
@kelly@can
Atached is another query profile. This is causing considerable frustration as sometimes these queries work and sometimes they don’t work. I am using redshift jdbc url replacing postgres jdbc, I am using same mariadb (as its supplied in dremio), I have checked both mysql servers for wait\_timeout which is 28800
Help Appreciated!
[5cff6d55-dddf-4ddd-b507-5512db6dd7f1.zip](https://us1.discourse-cdn.com/flex020/uploads/dremio/original/1X/f4b5fe7bf87277af49f5a80c61ec249274b28503.zip) (12.3 KB)
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### Author:  [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)
#### Post date: [February 15, 2018, 6:12am UTC](https://community.dremio.com/t/query-joining-multiple-datasources-does-not-return/753/6 "2018-02-15T06:12:08Z")
Hi @HLNA
This seems like a know issue (Could not send query: unexpected end of exception) that we already have an internal bug created. How often is this exception happening? In other words is it consistently reproducible?
Thanks,
@balaji.ramaswamy