Log Retention

Hi Team,

There are two variables in Kafka - log.retention.hours and log.retention.bytes.
What is the value has to be set for the above two variables so that there is no limit of hours or bytes, the messages stays forever? Is it a production level set up ?
Will it impact kafka performance and also use much of disk space or can we in between change the above variable values and restart the brokers?

Why I am asking the above is in hyperledger fabric blockchain framework kafka and zookeeper is used as a messaging service but recently many people have complained about its pruning of data for unknown reasons.
So just wanted to know how the best can the kafka be configured so that there is no issues of pruning. Currently zookeeper version - 3.4.10 and kafka version - 1.0.0 is used. Will the issues be resolved migrating to latest versions?

Regards,


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