Index: core/src/main/java/org/apache/hama/bsp/BSPJobClient.java =================================================================== --- core/src/main/java/org/apache/hama/bsp/BSPJobClient.java (revision 1482301) +++ core/src/main/java/org/apache/hama/bsp/BSPJobClient.java (working copy) @@ -455,7 +455,7 @@ } else { job.setInputPath(new Path(inputDir + "/partitions")); } - job.setInputFormat(SequenceFileInputFormat.class); + job.setInputFormat(NonSplitSequenceFileInputFormat.class); } else { LOG.error("Error partitioning the input path."); throw new IOException("Runtime partition failed for the job."); Index: core/src/main/java/org/apache/hama/bsp/NonSplitSequenceFileInputFormat.java =================================================================== --- core/src/main/java/org/apache/hama/bsp/NonSplitSequenceFileInputFormat.java (revision 0) +++ core/src/main/java/org/apache/hama/bsp/NonSplitSequenceFileInputFormat.java (revision 0) @@ -0,0 +1,28 @@ +/** + * 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.hama.bsp; + +import org.apache.hadoop.fs.Path; + +public class NonSplitSequenceFileInputFormat extends SequenceFileInputFormat { + + @Override + protected boolean isSplitable(BSPJob job, Path path) { + return false; + } +}