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https://issues.apache.org/jira/browse/HBASE-20594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16489594#comment-16489594
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Sean Busbey commented on HBASE-20594:
-------------------------------------
{code}
/**
* Compares two {@link TableDescriptor} and indicate which columns were
added, deleted,
* or modified from oldTD to newTD
* @return a TableDescriptorDelta that contains the added/deleted/modified
column names
*/
public static TableDescriptorDelta computeDelta(TableDescriptor oldTD,
TableDescriptor newTD) {
{code}
javadoc should say that these two must not be null.
> provide utility to compare old and new descriptors
> --------------------------------------------------
>
> Key: HBASE-20594
> URL: https://issues.apache.org/jira/browse/HBASE-20594
> Project: HBase
> Issue Type: Improvement
> Reporter: Mike Drob
> Assignee: Mike Drob
> Priority: Major
> Attachments: HBASE-20594.patch, HBASE-20594.v2.patch,
> HBASE-20594.v3.patch, HBASE-20594.v4.patch, HBASE-20594.v5.patch,
> HBASE-20594.v6.patch
>
>
> HBASE-20567 gives us hooks that give both the old and new descriptor in
> pre/postModify* events, but comparing them is still cumbersome. We should
> provide users some kind of utility for this.
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