* Bear in mind that the results of aggregate status methods including
* {@code size}, {@code isEmpty}, and {@code containsValue} are typically
* useful only when a map is not undergoing concurrent updates in other threads.
* Otherwise the results of these methods reflect transient states
* that may be adequate for monitoring or estimation purposes, but not
* for program control.


On Mon, Sep 18, 2017 at 5:18 AM, yang liu <[email protected]> wrote:

> Recently I studied the source code of ConcurrentHashMap.
>
> In java 1.7, the segment field "count" got no volatile modifiers which is
> different from java 1.6.
>
> Is possible the size() method could read stale value through race read?
>
>
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