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new 860abd0 [MINOR] Fixing key generators blog content (#2739)
860abd0 is described below
commit 860abd04cbb3e78265ba9a300bb0cd849fff7e44
Author: Sivabalan Narayanan <[email protected]>
AuthorDate: Tue Apr 20 12:17:30 2021 -0400
[MINOR] Fixing key generators blog content (#2739)
---
docs/_posts/2021-02-13-hudi-key-generators.md | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/docs/_posts/2021-02-13-hudi-key-generators.md
b/docs/_posts/2021-02-13-hudi-key-generators.md
index 5076ec6..fc3faa8 100644
--- a/docs/_posts/2021-02-13-hudi-key-generators.md
+++ b/docs/_posts/2021-02-13-hudi-key-generators.md
@@ -5,18 +5,21 @@ author: shivnarayan
category: blog
---
-Every record in Hudi is uniquely identified by a HoodieKey, which is a pair of
record key and partition path where the
-record belongs to. Hudi has imposed this constraint so that updates and
deletes can be applied to the record of interest.
-Hudi relies on the partition path field to partition your dataset and records
within a partition have unique record keys.
-Since uniqueness is guaranteed only within the partition, there could be
records with same record keys across different
-partitions. One should choose the partition field wisely as it could be a
determining factor for your ingestion and
-query latency.
+Every record in Hudi is uniquely identified by a primary key, which is a pair
of record key and partition path where
+the record belongs to. Using primary keys, Hudi can impose a) partition level
uniqueness integrity constraint
+b) enable fast updates and deletes on records. One should choose the
partitioning scheme wisely as it could be a
+determining factor for your ingestion and query latency.
+
+In general, Hudi supports both partitioned and global indexes. For a dataset
with partitioned index(which is most
+commonly used), each record is uniquely identified by a pair of record key and
partition path. But for a dataset with
+global index, each record is uniquely identified by just the record key. There
won't be any duplicate record keys across
+partitions.
## Key Generators
-Hudi exposes a number of out of the box key generators that customers can use
based on their need. Or can have their
-own implementation for the KeyGenerator. This blog goes over all different
types of key generators that are readily
-available to use.
+Hudi provides several key generators out of the box that users can use based
on their need, while having a pluggable
+implementation for users to implement and use their own KeyGenerator. This
blog goes over all different types of key
+generators that are readily available to use.
[Here](https://github.com/apache/hudi/blob/master/hudi-client/hudi-client-common/src/main/java/org/apache/hudi/keygen/KeyGenerator.java)
is the interface for KeyGenerator in Hudi for your reference.
