elasticsearch - Elasticserch 2.3.5 encrypting string values -

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i built cluster elasticsearch 2.3.5, , have loaded data using elasticsearch-spark(elasticsearch-hadoop 2.3.4) connector. looks except strings encrypted below...

    "changeaudioodstreams": "ltgumw==",     "enm": "qw50awrvdgu=",     "pid": 33,     "uid": 33,     "upid": 33,     "pnm": "vhjhdmlzifnjb3r0",     "upnm": "vhjhdmlzifnjb3r0",     "rd": "mjaxns0wny0zma==",     "weekid": 201601

is there property disable this?

setting below property in spark code fixed issue

sqlcontext.setconf("spark.sql.parquet.binaryasstring", "true");

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