public void prepareMutationsForMerge(
HRegionInfo mergedRegion,
HRegionInfo regionA,
HRegionInfo regionB,
ServerName serverName,
List<Mutation> mutations,
int regionReplication)
throws IOException {
HRegionInfo copyOfMerged = new HRegionInfo(mergedRegion);
// Put for parent
Put putOfMerged = MetaTableAccessor.makePutFromRegionInfo(copyOfMerged);
putOfMerged.add(HConstants.CATALOG_FAMILY, HConstants.MERGEA_QUALIFIER, regionA.toByteArray());
putOfMerged.add(HConstants.CATALOG_FAMILY, HConstants.MERGEB_QUALIFIER, regionB.toByteArray());
mutations.add(putOfMerged);
// Deletes for merging regions
Delete deleteA = MetaTableAccessor.makeDeleteFromRegionInfo(regionA);
Delete deleteB = MetaTableAccessor.makeDeleteFromRegionInfo(regionB);
mutations.add(deleteA);
mutations.add(deleteB);
// Add empty locations for region replicas of the merged region so that number of replicas can
// be cached whenever the primary region is looked up from meta
for (int i = 1; i < regionReplication; i++) {
addEmptyLocation(putOfMerged, i);
}
// The merged is a new region, openSeqNum = 1 is fine.
addLocation(putOfMerged, serverName, 1);
}
static CellProtos.Cell getRegionInfo(final ByteString row, final HRegionInfo hri) {
CellProtos.Cell.Builder cellBuilder = getBaseCellBuilder(row);
cellBuilder.setQualifier(REGIONINFO_QUALIFIER_BYTESTRING);
cellBuilder.setValue(HBaseZeroCopyByteString.wrap(hri.toByteArray()));
return cellBuilder.build();
}