bharatviswa504 commented on pull request #2518:
URL: https://github.com/apache/ozone/pull/2518#issuecomment-895987765
@neils-dev
The explanation you have said is already handled, if cache is explicitly
having null, we considered it is deleted, as we delete from table by
doubleuffer thread in background.
```
public CacheResult<CACHEVALUE> lookup(CACHEKEY cachekey) {
CACHEVALUE cachevalue = cache.get(cachekey);
if (cachevalue == null) {
return new CacheResult<>(CacheResult.CacheStatus.MAY_EXIST,
null);
} else {
if (cachevalue.getCacheValue() != null) {
return new CacheResult<>(CacheResult.CacheStatus.EXISTS, cachevalue);
} else {
// When entity is marked for delete, cacheValue will be set to null.
return new CacheResult<>(CacheResult.CacheStatus.NOT_EXIST, null);
}
}
}
```
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