[HBASE-15297] error message is wrong when a wrong namspace is specified in grant in hbase shell - ASF JIRA

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Hadoop Flags:

Incompatible change
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The security admin instance available within the HBase shell now returns "false" from the namespace_exists? method for non-existent namespaces rather than raising a wrapped NamespaceNotFoundException.

As a side effect, when the "grant" and "revoke" commands in the HBase shell are invoked with a non-existent namespace the resulting error message now properly refers to said namespace rather than to the user.

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The security admin instance available within the HBase shell now returns "false" from the namespace_exists? method for non-existent namespaces rather than raising a wrapped NamespaceNotFoundException. As a side effect, when the "grant" and "revoke" commands in the HBase shell are invoked with a non-existent namespace the resulting error message now properly refers to said namespace rather than to the user.

In HBase shell, specify a non-existing namespace in "grant" command, such as

hbase(main):001:0> grant 'a1', 'R', '@aaa'    <--- there is no namespace called "aaa"

The error message issued is not correct

ERROR: Unknown namespace a1!

a1 is the user name, not the namespace.

The following error message would be better

ERROR: Unknown namespace aaa!

Can't find a namespace: aaa

is duplicated by

HBASE-18531 incorrect error msg

relates to

HBASE-14254 Wrong error message when throwing NamespaceNotFoundException in shell