cgivre commented on a change in pull request #1978: DRILL-7578: HDF5 Metadata 
Queries Fail with Large Files
URL: https://github.com/apache/drill/pull/1978#discussion_r384895214
 
 

 ##########
 File path: 
contrib/format-hdf5/src/main/java/org/apache/drill/exec/store/hdf5/HDF5BatchReader.java
 ##########
 @@ -92,6 +93,18 @@
 
   private static final String LONG_COLUMN_NAME = "long_data";
 
+  private static final String DATA_SIZE_COLUMN_NAME = "data_size";
+
+  private static final String ELEMENT_COUNT_NAME = "element_count";
+
+  private static final String DATASET_DATA_TYPE_NAME = "dataset_data_type";
+
+  private static final String DIMENSIONS_FIELD_NAME = "dimensions";
+
+  private static final int PREVIEW_ROW_LIMIT = 20;
+
+  private static final int MAX_DATASET_SIZE = 16777216; // 16MB
 
 Review comment:
   Fixed

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