public AnalyzeRewriteContext getAnalyzeRewrite() {
    return analyzeRewrite;
  }
ColumnStatsAutoGatherContext: This is passed to the compiler when set
hive.stats.autogather=true during the INSERT, INSERT OVERWRITE, or CTAS
commands.
ql/src/java/org/apache/hadoop/hive/ql/parse/ColumnStatsAutoGatherContext.java