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https://issues.apache.org/jira/browse/HBASE-3811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13027546#comment-13027546
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Ted Yu commented on HBASE-3811:
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We can follow the example of HTableDescriptor.write():
{code}
out.writeInt(families.size());
for(Iterator<HColumnDescriptor> it = families.values().iterator();
{code}
> Allow adding attributes to Scan
> -------------------------------
>
> Key: HBASE-3811
> URL: https://issues.apache.org/jira/browse/HBASE-3811
> Project: HBase
> Issue Type: Improvement
> Components: client
> Reporter: Alex Baranau
> Priority: Minor
>
> There's sometimes a need to add custom attribute to Scan object so that it
> can be accessed on server side.
> Example of the case where it is needed discussed here:
> http://search-hadoop.com/m/v3Jtb2GkiO. There might be other cases where it is
> useful, which are mostly about logging/gathering stats on server side.
> Alternative to allowing adding any custom attributes to scan could be adding
> some fixed field, like "type" to the class.
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