[15] RFR (xs) 8046362 IdentityHashMap.hash comments should be clarified

Andrew Haley aph at redhat.com
Thu Feb 6 09:00:44 UTC 2020

On 1/28/20 11:41 PM, Stuart Marks wrote:

> As an aside, I don't know whether the linear-probing (open
> addressed) arrangement of IdentityHashMap is in fact faster than the
> separate chaining approach of HashMap. Perhaps investigating that
> could be a side project for someone.

It always has been better in the past, but maybe if the collision rate
is kept low it won't matter much. Deletion is horrible, though.

> Changeset appended below.
> Bug: https://bugs.openjdk.java.net/browse/JDK-8046362

OK, thanks.

Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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