can't find datasource in coordinator console


I was able to see the datasource in the coordinator console before, but with recent start I am not able to view the data source.

I have attached the screenshot too.

In old coordinator console, also I am not able to find it.

However when query with


It returning the list of all data sources.

Also can you please confirm , is there any sequence to start the services.

As of now I am starting like zookeeper - > broker -> historical -> coordinator - > overord.


Screen Shot 2015-12-03 at 6.57.40 PM.png

Hey Aman,

The coordinator has a startup delay configured by the property druid.coordinator.startDelay (see By default, the coordinator will not start managing segments until 5 minutes after it’s started and will not display your datasources immediately.

Historical nodes maintain a cache of previously served segments and when restarted will reload these segments from the cache even before the coordinator kicks in. This is what you’re seeing at the /druid/coordinator/v1/datasources endpoint and where the discrepancy is coming from.

Hey David,
Is there any other possibility of this happening, I’ve tried waiting for some time(definitely more than the start-up time of 5M). Its been some time that Aman has posted this, maybe you’ve faced similar problems!


Surendra, are you sure your segments are being handed off to historicals?

Yes, I was able to query the broker using postman, but after a reset of all servers all data was gone. I’m getting empty responses after a restart.

Hi Aman,
which metadata storage are you using ?

do you see the segments present in the metadata storage ?

Do you see any exceptions in coordinator logs while polling segments from metadata storage ?