Hello, I am running 0.90.2 cluster and I want to upgrade it to 0.90.10.
I created a new instance with 0.90.10 and I expected it would join to the
legacy cluster but with the following error, it couldn't join. The new
instance doesn't have any data and I was expecting newly joined instance
would copy the replica from the old one.
2014-01-11 08:42:26,070 INFO
[elasticsearch[...][generic][T#1]] [internalInfo] [i-6d71a643] failed to
send join request to master
java.io.IOException: Expected handle header, got ]
I guess 'Expected handle header' error usually occurs when mixed versions
of ES are used but is this normal procedure of rolling upgrade of
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