integration/presto/src/main/prestodb/org/apache/carbondata/presto/impl/CarbonTableReader.java [153:169]:
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  private void updateSchemaTables(SchemaTableName schemaTableName, Configuration config) {
    CarbonTableCacheModel carbonTableCacheModel = carbonCache.get().get(schemaTableName);
    if (carbonTableCacheModel != null &&
        carbonTableCacheModel.getCarbonTable().isTransactionalTable()) {
      CarbonTable carbonTable = carbonTableCacheModel.getCarbonTable();
      long latestTime = FileFactory.getCarbonFile(CarbonTablePath
              .getSchemaFilePath(
                  carbonTable.getTablePath()),
          config).getLastModifiedTime();
      carbonTableCacheModel.setCurrentSchemaTime(latestTime);
      if (!carbonTableCacheModel.isValid()) {
        // Invalidate indexes
        IndexStoreManager.getInstance()
            .clearIndex(carbonTableCacheModel.getCarbonTable().getAbsoluteTableIdentifier());
      }
    }
  }
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integration/presto/src/main/prestosql/org/apache/carbondata/presto/impl/CarbonTableReader.java [148:164]:
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  private void updateSchemaTables(SchemaTableName schemaTableName, Configuration config) {
    CarbonTableCacheModel carbonTableCacheModel = carbonCache.get().get(schemaTableName);
    if (carbonTableCacheModel != null &&
        carbonTableCacheModel.getCarbonTable().isTransactionalTable()) {
      CarbonTable carbonTable = carbonTableCacheModel.getCarbonTable();
      long latestTime = FileFactory.getCarbonFile(CarbonTablePath
              .getSchemaFilePath(
                  carbonTable.getTablePath()),
          config).getLastModifiedTime();
      carbonTableCacheModel.setCurrentSchemaTime(latestTime);
      if (!carbonTableCacheModel.isValid()) {
        // Invalidate indexes
        IndexStoreManager.getInstance()
            .clearIndex(carbonTableCacheModel.getCarbonTable().getAbsoluteTableIdentifier());
      }
    }
  }
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