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Posted to reviews@spark.apache.org by "cloud-fan (via GitHub)" <gi...@apache.org> on 2024/03/18 03:05:06 UTC

Re: [PR] [SPARK-45891][DOCS] Update README with more details [spark]

cloud-fan commented on code in PR #45539:
URL: https://github.com/apache/spark/pull/45539#discussion_r1527731419


##########
common/variant/README.md:
##########
@@ -15,6 +15,55 @@ Another motivation for the representation is that (aside from metadata) each inn
 
 # Metadata encoding
 
+The encoded metadata always starts with a header byte.
+```
+             7     6  5   4  3             0
+            +-------+---+---+---------------+
+header      |       |   |   |    version    |

Review Comment:
   so the bit 5 is unused?



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