viirya commented on a change in pull request #26828:
URL: https://github.com/apache/spark/pull/26828#discussion_r487573425
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File path: core/src/main/java/org/apache/spark/unsafe/map/BytesToBytesMap.java
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@@ -741,7 +741,9 @@ public boolean append(Object kbase, long koff, int klen,
Object vbase, long voff
longArray.set(pos * 2 + 1, keyHashcode);
isDefined = true;
- if (numKeys >= growthThreshold && longArray.size() < MAX_CAPACITY) {
+ // We use two array entries per key, so the array size is twice the
capacity.
+ // We should compare the current capacity of the array, instead of its
size.
+ if (numKeys >= growthThreshold && longArray.size() / 2 < MAX_CAPACITY)
{
try {
growAndRehash();
Review comment:
I submitted another PR targeting the case of reaching `MAX_CAPACITY`. It
actually prevents we increase the number of keys to be `MAX_CAPACITY`.
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