[deprecation.common ] Deprecated field [ignore_unmapped] used, replaced by [unmapped_type]

Currently running ES 2.4.1 and preparing to upgrade to ES 5 so I have turned on deprecation logging.

I am seeing this repeatedly in the log files (about once every 2 seconds):

[2016-11-17 08:46:08,232][DEBUG][deprecation.common ] Deprecated field [ignore_unmapped] used, replaced by [unmapped_type]

Since I am running this in my local developer environment, I am pretty sure no queries are being executed.

The message seems to be coming from org.elasticsearch.common.ParseField class, method match(String, boolean), but I do not understand why I'm getting the warning.

What is causing this deprecation warning and how do I fix it?

Thanks in advance!

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