default boolean isHA() {
    return true;
  }
Specifies whether the function is eligible for re-execution (in case of failure).

@return whether the function is eligible for re-execution.
@see RegionFunctionContext#isPossibleDuplicate()
@since GemFire 6.5
geode-core/src/main/java/org/apache/geode/cache/execute/Function.java