Github user dszeto commented on the issue:
https://github.com/apache/incubator-predictionio/pull/336
@marevol One way to do so is to rename the existing ES configuration and
code to something like `ES1Events`,
`PIO_STORAGE_SOURCES_ELASTICSEARCH1_TYPE=elasticsearch1`, and keep your new
code as is. This may require build profiles (#295) though. Please let us know
how it goes.
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