public int performRCFileFullyReadColumnTest( FileSystem fs, Path file, int allColumnsNumber, boolean chechCorrect) throws IOException { byte[][] checkBytes = null; BytesRefArrayWritable checkRow = new BytesRefArrayWritable(allColumnsNumber); if (chechCorrect) { resetRandomGenerators(); checkBytes = new byte[allColumnsNumber][]; } int actualReadCount = 0; ColumnProjectionUtils.setReadAllColumns(conf); RCFile.Reader reader = new RCFile.Reader(fs, file, conf); LongWritable rowID = new LongWritable(); BytesRefArrayWritable cols = new BytesRefArrayWritable(); while (reader.next(rowID)) { reader.getCurrentRow(cols); boolean ok = true; if (chechCorrect) { nextRandomRow(checkBytes, checkRow); ok = ok && checkRow.equals(cols); } if (!ok) { throw new IllegalStateException("Compare read and write error."); } actualReadCount++; } return actualReadCount; }