8202261: (fc) FileChannel.map and RandomAccessFile.setLength should not preallocate space

[Alan Bateman]

On 26/04/2018 15:25, Ismael Juma wrote:
> Seems like JDK-8202261 has been merged. Would a backport to Java 10 be 
> considered? We would like to recommend Java 10 for Kafka users due to 
> much faster TLS and CRC32C, but the increased disk usage (without 
> JDK-8202261) could take users by surprise.
It would be useful to get folks trying out the changes in the JDK 11 EA 
builds before any back ports are considered. This week's build should be 
jdk-11+11. It's not tagged yet so I can't tell if the changes pushed a 
few hours ago will be in this build or next week's jdk-11+12.

-Alan
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