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commit 3175c35c7d721aef0c4c6b358cc3b422089c1ba7 Author: Attila Bukor <[email protected]> AuthorDate: Mon Dec 9 13:43:59 2019 -0800 KUDU-1938 Add VARCHAR to schema design docs Change-Id: Ieae3000dde14f68a900dd63624d2778ce01cfa26 Reviewed-on: http://gerrit.cloudera.org:8080/14865 Reviewed-by: Grant Henke <[email protected]> Tested-by: Kudu Jenkins --- docs/known_issues.adoc | 7 +++---- docs/schema_design.adoc | 3 ++- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/docs/known_issues.adoc b/docs/known_issues.adoc index c8e2e5d..84f2925 100644 --- a/docs/known_issues.adoc +++ b/docs/known_issues.adoc @@ -51,11 +51,10 @@ === Columns -* CHAR, VARCHAR, DATE, and complex types like ARRAY, MAP, and STRUCT are not supported. +* CHAR, DATE, and complex types like ARRAY, MAP, and STRUCT are not supported. -* Type and nullability of existing columns cannot be changed by altering the table. - -* The precision and scale of `DECIMAL` columns cannot be changed by altering the table. +* Type, nullability and type attributes (i.e. precision and scale of `DECIMAL`, + length of `VARCHAR`)of existing columns cannot be changed by altering the table. * Tables can have a maximum of 300 columns by default. diff --git a/docs/schema_design.adoc b/docs/schema_design.adoc index db12adb..3ecceed 100644 --- a/docs/schema_design.adoc +++ b/docs/schema_design.adoc @@ -78,6 +78,7 @@ column types include: * decimal (see <<decimal>> for details) * UTF-8 encoded string (up to 64KB uncompressed) * binary (up to 64KB uncompressed) +* VARCHAR type with configurable maximum length (up to 64KB uncompressed) Kudu takes advantage of strongly-typed columns and a columnar on-disk storage format to provide efficient encoding and serialization. To make the most of @@ -149,7 +150,7 @@ of the column. | int64, unixtime_micros | plain, bitshuffle, run length | bitshuffle | float, double, decimal | plain, bitshuffle | bitshuffle | bool | plain, run length | run length -| string, binary | plain, prefix, dictionary | dictionary +| string, binary, varchar | plain, prefix, dictionary | dictionary |=== [[plain]]
