private static int calculateThreadIdExpiryTime() {
      Optional<Integer> expiryTime = getProductIntegerProperty(THREAD_ID_EXPIRY_TIME_PROPERTY);
      return expiryTime.orElse(DEFAULT_THREAD_ID_EXPIRY_TIME);
    }
expiry time for ThreadIdentifiers. In seconds.
geode-core/src/main/java/org/apache/geode/internal/cache/ha/HARegionQueue.java