when i uprading my elasticsearch cluster from 1.4.4 to 2.4.4, i wait for a long time and the nodes do not setup cluster. i use netstat to check listening port, and i find all nodes do not listem port 9300 and 9200 in the log, there are many log messages like: [2016-10-15 19:22:22,559][INFO ][co…

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Does it take a long time for upgrading elasticsearch version 1.4.4 to version 2.4.4?

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