Andrew Olson created HBASE-6954:
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Summary: Column-counting filters can accept multiple versions of a
column
Key: HBASE-6954
URL: https://issues.apache.org/jira/browse/HBASE-6954
Project: HBase
Issue Type: Bug
Components: Filters
Reporter: Andrew Olson
It looks like the max version limit for a table or scanner is not applied to
disregard older versions, prior to counting columns within a
ColumnPaginationFilter or ColumnCountGetFilter. As a result, a Scan or Get can
ultimately retrieve fewer than the requested number of columns when there is a
sufficient number of existing columns to satisfy the request, if multiple
versions of a column have been added to a row.
A minimal test case demonstrating this behavior is attached.
The javadoc for Get mentions 'Only Filter.filterKeyValue(KeyValue) is called
AFTER all tests for ttl, column match, deletes and max versions have been
run.'; for these two filters this behavior does not appear to be true, as
flattening of multiple versions appears to occur after the filter has been
applied.
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