Overpass API query for route_master relations doesn't work

[contrapunctus]

What steps will reproduce the problem?

Download using Overpass Turbo query "type=route_master and route_master=bus in Delhi"

What is the expected result?

Bus route_master relations in Delhi are downloaded.

What happens instead?

A "No data found in this area" message appears. No route_master relations are downloaded.

Please provide any additional information below. Attach a screenshot if possible.

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-12-31 03:09:43 +0100 (Sun, 31 Dec 2017)
Build-Date:2017-12-31 02:33:46
Revision:13265
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13265 en) Linux Debian GNU/Linux 9.3 (stretch)
Memory Usage: 459 MB / 866 MB (42 MB allocated, but free)
Java version: 1.8.0_151-8u151-b12-1~deb9u1-b12, Oracle Corporation, OpenJDK Server VM
Screen: :0.0 1366x768
Maximum Screen Size: 1366x768
Java package: openjdk-8-jre:i386-8u151-b12-1~deb9u1
Java ATK Wrapper package: libatk-wrapper-java:all-0.33.3-13
Dataset consistency test: No problems found

Plugins:
+ continuosDownload (68)
+ download_along (33710)
+ pt_assistant (33860)
+ public_transport (33817)

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- W: java.net.SocketException: Socket closed
- E: java.net.SocketException: Socket closed

[Don-vip]

Did you try to increase the search timeout? I guess there a lot of data in New Delhi and you cannot use the default timeout value.

[contrapunctus]

I tried increasing it to 60, then 600. No luck. FWIW the query '(type:relation and type=route and route=bus) in Delhi' works, downloading the relations (as well as their members). This is with the default timeout, and this is probably more data than the route master relations, right?

[naoliv]

It's not a problem in JOSM from what I can see, but in your query.
Even directly from overpass there is no data when using type=route_master and route_master=bus in Delhi: ​https://overpass-turbo.eu/s/vnq

Simply there is no object with type=route_master in Delhi.

Also note that type:relation and type=route and route=bus is way different than type=route_master and route_master=bus

[contrapunctus]

Simply there is no object with type=route_master in Delhi.

But...there are, I made them myself :\ I can even download the route_master relations by selecting the child relations and File -> Download parents, or by downloading them from the Parents tab in the relation editor.

One example -
​https://www.openstreetmap.org/relation/7930910

[floscher]

This is a design decision of Overpass API. It will not resolve relations inside relations: ​https://github.com/drolbr/Overpass-API/issues/293