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https://issues.apache.org/jira/browse/HBASE-15432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15747519#comment-15747519
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Xuesen Liang commented on HBASE-15432:
--------------------------------------
How about to reuse 'SCAN_COLUMN_FAMILY'?
For example, the following code in
org.apache.hadoop.hbase.mapreduce.TableInputFormat
{code}
if (conf.get(SCAN_COLUMN_FAMILY) != null) {
scan.addFamily(Bytes.toBytes(conf.get(SCAN_COLUMN_FAMILY)));
}
{code}
can be replaced by
{code}
for (String cf : conf.getTrimmedStrings(SCAN_COLUMN_FAMILY)) {
scan.addFamily(Bytes.toBytes(cf));
}
{code}
It is totally compatible.
> TableInputFormat - support multiple column families scan
> --------------------------------------------------------
>
> Key: HBASE-15432
> URL: https://issues.apache.org/jira/browse/HBASE-15432
> Project: HBase
> Issue Type: New Feature
> Affects Versions: 2.0.0, 0.98.16, 0.98.16.1
> Reporter: nirav patel
>
> Currently Hbase TableInputFormat class has SCAN_COLUMN_FAMILY and
> SCAN_COLUMNS. SCAN_COLUMN_FAMILY can only scan single column family. If we
> need to scan multiple column families from a table then we must use
> SCAN_COLUMNS where we must provide both columns and column families which is
> not a convenient. Can we have a SCAN_COLUMN_FAMILIES which supports scan of
> multiple column families.
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