tree efa6a93bf7edf5a9f0ef8c8715564c7e91781764
parent a4dde3cdfb4ab2d39d364c96c7ec6ac1d607a363
author Marton Greber <greber.mx@gmail.com> 1659611664 +0200
committer Alexey Serbin <alexey@apache.org> 1663086335 +0000

KUDU-3379 Add column comments to table describe

This patch adds -show_column_comment flag to the 'kudu table describe'
CLI tool. If there are column comments specified, this can be used to
show them.

Schema and ColumnSchema use the ToStringMode enum to control how they
are stringified. Previously these were used to signal a single mode of
the stringification. Now both are populated through bit shifting. This
way the enum can be used as a holder of multiple binary flags. We can
check for the presence of a flag through 'bitwise and' operator, and set
a given flag through the 'bitwise or' operator.

A new test case is added to check whether the column describing flags
work, alone and together as well.

Change-Id: Id8b751bd821a5f50490caa6f1aaf1fc767de0222
Reviewed-on: http://gerrit.cloudera.org:8080/18903
Tested-by: Kudu Jenkins
Reviewed-by: Alexey Serbin <alexey@apache.org>