Blocker for Upgrade to 2.x

Hi all,

we are using ES 1.3.7 version for huge data's.

For upgrading to 2.x, we have big blocker (i.e) more than thousands Mapping conflicts in indices .

we need to upgrade because facing more bugs's in ES 1.x

we facing difficulties to overcome this blocker ,Can any one suggest how to resolve it!

You will need to reindex the data to fix those conflicts.

thanks @warkolm ,Reindex leads to data loss right?


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