Logstashh : Got error to send bulk of actions to elasticsearch server at xx.xx.xxx

Hi,
I was facing low disk watermark issue on ES. I dont know solution of this, So I deleted old indexes and restarted the cluster.
Then Logstash indexer started giving error
{:timestamp=>"2015-07-22T03:00:15.380000+0300", :message=>"Got error to send bulk of actions to elasticsearch server at xx.xxx.xx.xx : Read timed out", :level=>:error}

Can anybody please help me to resolve this? at least a hint.

I have below structure of ELK

LSF==> LS shipper->Redis->LS Indexer->ES
Error is at indexer stage.

thanks
Sunil.

The read timeout issue has been solved in 1.5.2. Please update to that and let us know if it fixed it