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Subject [GitHub] [incubator-hudi] vinothchandar commented on a change in pull request #1333: [HUDI-589][DOCS] Fix querying_data page
Date Fri, 14 Feb 2020 02:44:38 GMT
vinothchandar commented on a change in pull request #1333: [HUDI-589][DOCS] Fix querying_data
page
URL: https://github.com/apache/incubator-hudi/pull/1333#discussion_r379226624
 
 

 ##########
 File path: docs/_docs/2_3_querying_data.md
 ##########
 @@ -145,8 +161,13 @@ Additionally, `HoodieReadClient` offers the following functionality
using Hudi's
 | filterExists() | Filter out already existing records from the provided RDD[HoodieRecord].
Useful for de-duplication |
 | checkExists(keys) | Check if the provided keys exist in a Hudi table |
 
+### Read optimized query
+
+For read optimized queries, either Hive SerDe can be used by turning off convertMetastoreParquet
as described above or Spark's built in support can be leveraged. 
+If using spark's built in support, additionally a path filter needs to be pushed into sparkContext
as described earlier.
 
 ## Presto
 
-Presto is a popular query engine, providing interactive query performance. Presto currently
supports only read optimized queries on Hudi tables. 
-This requires the `hudi-presto-bundle` jar to be placed into `<presto_install>/plugin/hive-hadoop2/`,
across the installation.
+Presto is a popular query engine, providing interactive query performance. Presto currently
supports snapshot queries on
+COPY_On_WRITE and read optimized queries on MERGE_ON_READ Hudi tables. This requires the
`hudi-presto-bundle` jar 
 
 Review comment:
   COPY_ON_WRITE: typo

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