org.apache.hudi.org.apache.hadoop.hbase.io.hfile.HFileUtil Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.io.hfile;
import java.io.IOException;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.yetus.audience.InterfaceAudience;
@InterfaceAudience.Private
class HFileUtil {
/** guards against NullPointer
* utility which tries to seek on the DFSIS and will try an alternative source
* if the FSDataInputStream throws an NPE HBASE-17501
* @param istream
* @param offset
* @throws IOException
*/
static public void seekOnMultipleSources(FSDataInputStream istream, long offset) throws IOException {
try {
// attempt to seek inside of current blockReader
istream.seek(offset);
} catch (NullPointerException e) {
// retry the seek on an alternate copy of the data
// this can occur if the blockReader on the DFSInputStream is null
istream.seekToNewSource(offset);
}
}
}