private void cmnMarkInitialized(DiskRegionView dr) {
    // dec since this initializeId is overriding a previous one
    // It actually doesn't override myInitializing
    // this.ifLiveRecordCount--;
    // don't count this as a record in the totalRecCount
    if (dr != null) {
      dr.markInitialized();
    } else {
      if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY_VERBOSE)) {
        logger.trace(LogMarker.PERSIST_RECOVERY_VERBOSE, "bad disk region id!");
      } else {
        throw new IllegalStateException("bad disk region id");
      }
    }
  }
Maximum number of bytes used to encode a DiskRegion id.
geode-core/src/main/java/org/apache/geode/internal/cache/DiskInitFile.java