RFR: 8263976: Remove block allocation from BasicHashtable [v2]

[Coleen Phillimore]

On Mon, 22 Mar 2021 23:08:09 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix Hashtable constructor and comments.
>
> Marked as reviewed by iklam (Reviewer).

Thanks Lois and Ioi!

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PR: https://git.openjdk.java.net/jdk/pull/3123