package org.apache.hadoop.hbase.regionserver.transactional;
import java.util.Collection;
import java.util.List;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.KeyValue.Type;
import org.apache.hadoop.hbase.client.Delete;
/**
* Used to fail-fast when Delete.addColumn is used instead of Delete.addColumns. The transactional layer does not yet
* support the deletion of a single row.cell.version.
*/
public class SingleVersionDeleteNotSupported extends DoNotRetryIOException {
private static final long serialVersionUID = 1297446454511704139L;
/**
* default constructor
*/
public SingleVersionDeleteNotSupported() {
super(TransactionalRegionServer.class.getName()
+ " does not support single version deletes. Use Delete.addColumns()"
+ " to remove all versions of the given row, column.");
}
/**
* Validate that a single-version delete is not used. Having to do this for now because transactional delete
* mechansim will currently treat DeleteColumn the same as Delete which could cause confusion.
*/
public static void validateDelete(final Delete delete) throws SingleVersionDeleteNotSupported {
Collection<List<KeyValue>> values = delete.getFamilyMap().values();
for (List<KeyValue> value : values) {
for (KeyValue kv : value) {
if (Type.Delete.getCode() == kv.getType()) {
throw new SingleVersionDeleteNotSupported();
}
}
}
}
}