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https://issues.apache.org/jira/browse/HBASE-4612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13130033#comment-13130033
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Ted Yu commented on HBASE-4612:
-------------------------------
As far as HBASE-4176 is concerned, take a look at this in TRUNK:
{code}
public static Filter createFilterFromArguments(ArrayList<byte []>
filterArguments) {
Preconditions.checkArgument(filterArguments.size() == 1,
"Expected 1 but got: %s",
filterArguments.size());
byte [] columnPrefix =
ParseFilter.removeQuotesFromByteArray(filterArguments.get(0));
return new ColumnPrefixFilter(columnPrefix);
}
{code}
You can relax the check above and call filterArguments.toArray() so that the
new ctor can be used.
> Allow ColumnPrefixFilter to support multiple prefixes
> -----------------------------------------------------
>
> Key: HBASE-4612
> URL: https://issues.apache.org/jira/browse/HBASE-4612
> Project: HBase
> Issue Type: Improvement
> Components: filters
> Affects Versions: 0.90.4
> Reporter: Eran Kutner
> Assignee: Eran Kutner
> Priority: Minor
> Fix For: 0.94.0
>
> Attachments: HBASE-4612-0.90.patch
>
>
> When having a lot of columns grouped by name I've found that it would be very
> useful to be able to scan them using multiple prefixes, allowing to fetch
> specific groups in one scan, without fetching the entire row. This is
> impossible to achieve using a FilterList, so I've added such support to the
> existing ColmnPrefixFilter while keeping backward compatibility.
> The attached patch is based on 0.90.4, I noticed that the 0.92 branch has a
> new method to support instantiating filters using Thrift. I'm not sure how
> the serialization works there so I didn't implement that, but the rest of my
> code should work in 0.92 as well.
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