Problem with insert data to elasticsearch

Hi,

I'm using latest elasticsearch release 0.12.0
I have problem with insert data to elasticsearch.
I'm using "elasticsearch" PHP client to insert data.

Insert data is done in loop.
PHP script insert 0 - 10000 entries and reload itself.
Next it insert entries from 10000 - 20000. And it reload and start
from 30000.
Script should works like this to the end. About 190000 entries.

Insert single entry works ok. Problem is that script stops every time
after insert 28233 entries.
I'm 100% sure it's not problem with inserted data of entry 28233
because starting from 10000 it will go thourgh entry 28233 without any
problem and will stop on entry 38233. So it always insert only 28233
entries.
PHP client return error.
Couldnt connect to host [123.123.123.123], ElasticSearch down?

(123.123.123.123 - is fake ip address)

This problem don't generate any log entry in log file.
ElasticSearch is not down after this problem happen.


Did anyone have same problem?
Can anyone help me to find what is the reason of this problem?

Thank You
Regards
Jakub