How to Fix Read timed out in Elasticsearch

Question

I used Elasticsearch-1.1.0 to index tweets. The indexing process is okay. Then I upgraded the version. Now I use Elasticsearch-1.3.2, and I get this message randomly:

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Answer 1

Increasing various timeout options may immediately resolve issues, but does not address the root cause.

Provided the ElasticSearch service is available and the indexes are healthy, try increasing the the Java minimum and maximum heap sizes: see https://www.elastic.co/guide/en/elasticsearch/reference/current/jvm-options.html .

TL;DR Edit /etc/elasticsearch/jvm.options -Xms1g and -Xmx1g