kafka broker suspended animation

Problem description: 2 broker nodes, 2 partitions, and 2 redundant data copies. Suddenly one day, it was found that the data was lost. After investigation, it was found that the kafka processes of the two kafka nodes exist normally, but one of them has no effect. . After restarting, it worked fine.

Solution: It is estimated that it is a bug of kafka, and the problem does not appear after upgrading 0.8.1.

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