Debug logs when indexing by bulks

Hi,

I'm using bulks to index billions of docs. I check the logs and I find that
it keeps logging like this:
[2014-02-20 00:00:01,325][DEBUG][action.bulk ] [Will o' the
Wisp] [...][21] failed to execute bulk item (index) index {...}
java.lang.ArrayIndexOutOfBoundsException
[2014-02-20 00:00:04,345][DEBUG][action.bulk ] [Will o' the
Wisp] [...][29] failed to execute bulk item (index) index {...}
java.lang.ArrayIndexOutOfBoundsException
...

but my indices are keep increasing. how to solve it out?

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Not sure about the cause of your error logs, but I'd try to limit the bulk
sizes to between 5-15MB and see if you still get the errors.

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