How to use HashMap which causes hang to add atari from log

If the following log to HashMap is observed

Sample1.log


	at java.util.HashMap.findNonNullKeyEntry(HashMap.java:605)
	at java.util.HashMap.putImpl(HashMap.java:701)
	at java.util.HashMap.put(HashMap.java:684)
	at zzz.yyy.xxx.setSomething(SomeUtil.java:nnn)

Sample2.log


	at java.util.HashMap$TreeNode.putTreeVal(HashMap.java:2013)
	at java.util.HashMap.putVal(HashMap.java:648)
	at java.util.HashMap.put(HashMap.java:622)
	at zzz.yyy.xxx.setSomething(SomeUtil.java:nnn)

For an example, take a look at SomeUtil.java or have the developer look at it.

Is HashMap used with proper exclusive control?

HashMap review

-Case where OutOfMemoryError occurs in HashMap -HashMap, infinite loop and synchronized -Is the infinite corridor hidden in Thread and HashMap really interesting? -Infinite loop with static HashMap.put () in multithreading

Exclusive control review

-Exclusive control and that -Let newcomers experience exclusive control by pessimistic lock

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