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From danburk...@apache.org
Subject [4/6] kudu git commit: [docs] Add note about lack of versioning column
Date Tue, 07 Nov 2017 19:15:16 GMT
[docs] Add note about lack of versioning column

Probably because of overlaps with HBase, users often ask if Kudu
provides a version or timestamp column. We don't, and we don't plan to,
so let's add a note telling users to provide their own such column.

Change-Id: I18f2a6215fa9fa982dc850c13de8e6f2efff64a1
Reviewed-on: http://gerrit.cloudera.org:8080/8482
Reviewed-by: Todd Lipcon <todd@apache.org>
Tested-by: Will Berkeley <wdberkeley@gmail.com>


Project: http://git-wip-us.apache.org/repos/asf/kudu/repo
Commit: http://git-wip-us.apache.org/repos/asf/kudu/commit/fde2b56c
Tree: http://git-wip-us.apache.org/repos/asf/kudu/tree/fde2b56c
Diff: http://git-wip-us.apache.org/repos/asf/kudu/diff/fde2b56c

Branch: refs/heads/master
Commit: fde2b56cd2dba0e8291a6813e54a1cf6cd921575
Parents: c326afa
Author: Will Berkeley <wdberkeley@apache.org>
Authored: Mon Nov 6 12:00:19 2017 -0800
Committer: Will Berkeley <wdberkeley@gmail.com>
Committed: Tue Nov 7 16:03:38 2017 +0000

----------------------------------------------------------------------
 docs/schema_design.adoc | 7 +++++++
 1 file changed, 7 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/kudu/blob/fde2b56c/docs/schema_design.adoc
----------------------------------------------------------------------
diff --git a/docs/schema_design.adoc b/docs/schema_design.adoc
index b5df9e2..9764239 100644
--- a/docs/schema_design.adoc
+++ b/docs/schema_design.adoc
@@ -83,6 +83,13 @@ simulating a 'schemaless' table using string or binary columns for data
which
 may otherwise be structured. In addition to encoding, Kudu allows compression to
 be specified on a per-column basis.
 
+[[no_version_column]]
+[IMPORTANT]
+.No Version or Timestamp Column
+Unlike HBase, Kudu does not provide a version or timestamp column to track changes
+to a row. If version or timestamp information is needed, the schema should include
+an explicit version or timestamp column.
+
 [[encoding]]
 === Column Encoding
 


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