bharatviswa504 commented on a change in pull request #882: HDDS-1624 : Refactor
operations inside the bucket lock in OM key write.
URL: https://github.com/apache/hadoop/pull/882#discussion_r290069647
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File path:
hadoop-hdds/common/src/main/java/org/apache/hadoop/utils/db/TypedTable.java
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@@ -79,6 +79,12 @@ public boolean isEmpty() throws IOException {
return rawTable.isEmpty();
}
+ @Override
+ public boolean isExist(KEY key) throws IOException {
+ return cache.get(new CacheKey<>(key)) != null ||
Review comment:
Here, we need to check value also along with key.
A case like createBucket, DeleteBucket, we will have the key in the cache
for that bucket, but with the value null. And also is this isExist will be
called with the lock? As someone can modify the same key while checks are
happening.
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