private void fail(String reason) {
    setResultCacheInvalidReason(reason);
    this.materializationValidationResult = new MaterializationValidationResult(
        EnumSet.noneOf(RewriteAlgorithm.class), "Cannot enable automatic rewriting for materialized view. " + reason);
    throw Util.FoundOne.NULL;
  }
Checks the query plan for conditions that would make the plan unsuitable for
materialized views or query caching:
- References to temporary or external tables
- References to non-deterministic functions.
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/HiveRelOptMaterializationValidator.java