This is pretty much the same thing as your other thread in which your cluster seems heavily overloaded and is running a very old version. You have less than 1MB of data but well over 1000 primary shards.
As mentioned before, you should upgrade as a matter of some urgency. Newer versions will deal with high shard counts better, and also have better diagnostic tooling for working out what else might be going wrong.
In the meantime I expect it will help to delete any indices you don't need.