ChiaPing Tsai created HBASE-16729:
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Summary: Define the behavior of (default) empty FilterList
Key: HBASE-16729
URL: https://issues.apache.org/jira/browse/HBASE-16729
Project: HBase
Issue Type: Wish
Reporter: ChiaPing Tsai
Priority: Trivial
Current empty FilterList filters all data, because the
FilterList#isFamilyEssential always returns false which causes the null cell
retrieved by RegionScannerImpl.storeHeap.
It seems to me that empty FilterList should do nothing, because the following
code is common.
{noformat}
private static Filter makeFilter() {
FilterList filterList = new FilterList ();
for (some conditions) {
// add some filters. Or nothing to add.
}
return filterList;
}
{noformat}
If we keep the current logic which filters all data, we should add enough
comments to explain it. Or add the FilterList#size() or FilterList#empty() for
preventing filtering all data.
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