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From "Chia-Ping Tsai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18572) Delete#addColumn can't remove the cell which has no visibility label
Date Wed, 16 Aug 2017 03:15:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16128241#comment-16128241
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Chia-Ping Tsai commented on HBASE-18572:
----------------------------------------

bq. Do we need special check there also?
I'm not sure whether any bugs occur without the special check. Will examine it...

> Delete#addColumn can't remove the cell which has no visibility label
> --------------------------------------------------------------------
>
>                 Key: HBASE-18572
>                 URL: https://issues.apache.org/jira/browse/HBASE-18572
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.3.1, 1.2.6, 2.0.0-alpha-1
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>            Priority: Critical
>             Fix For: 2.0.0, 1.4.0, 1.3.2, 1.5.0, 1.2.7
>
>         Attachments: HBASE-18572.ut.patch, HBASE-18572.v0.patch, HBASE-18572.v0.patch
>
>
> {code:title=DefaultVisibilityLabelServiceImpl.java}
>   @Override
>   public boolean matchVisibility(List<Tag> putVisTags, Byte putTagsFormat, List<Tag>
deleteVisTags,
>       Byte deleteTagsFormat) throws IOException {
>     if ((deleteTagsFormat != null && deleteTagsFormat == SORTED_ORDINAL_SERIALIZATION_FORMAT)
>         && (putTagsFormat == null || putTagsFormat == SORTED_ORDINAL_SERIALIZATION_FORMAT))
{
>       if (putVisTags.isEmpty()) {
>         // Early out if there are no tags in the cell
>         return false;
>       }
>       if (putTagsFormat == null) {
>         return matchUnSortedVisibilityTags(putVisTags, deleteVisTags);
>       } else {
>         return matchOrdinalSortedVisibilityTags(putVisTags, deleteVisTags);
>       }
>     }
>     throw new IOException("Unexpected tag format passed for comparison, deleteTagsFormat
: "
>         + deleteTagsFormat + ", putTagsFormat : " + putTagsFormat);
>   }
> {code}
> If the putVisTags is empty, it will return the false directly. Hence, the Delete#addColumn
can't "see" the cell as well as deleting it. The Delete#addColumns, by contrast, doesn't invoke
the cp#prePrepareTimeStampForDeleteVersion so it can remove the cell.



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