keith-turner commented on PR #4204:
URL: https://github.com/apache/accumulo/pull/4204#issuecomment-1934388313
What lead to the createAndReserve call was trying to deal with the following
race condition when I was trying to sub out using this feature.
```java
class Fate {
seed(..., FateKey key,...) {
var fateId = create(key);
// another thread could sneak in here
var fateTxStore = store.reserve(fateId);
try{
// between create and reserve, its possible something happened
with the key so now that we hold the reservation check that things are as
expected
store.checkKeyIsStillSame(fateId,key);
}finally{
fateTxStore.unreserve();
}
}
```
So hoping having the store create and reserve can avoid this.
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