Last change
on this file since 24 was
20,
checked in by waue, 16 years ago
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將改完的 hadoop 0.17版package 放來備份
目前繼續開發 hadoop 0.16 + hbase 1.3
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File size:
953 bytes
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Line | |
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1 | package tw.org.nchc.util; |
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2 | |
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3 | import java.io.IOException; |
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4 | |
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5 | import org.apache.hadoop.fs.FileSystem; |
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6 | import org.apache.hadoop.fs.Path; |
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7 | import org.apache.hadoop.io.LongWritable; |
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8 | import org.apache.hadoop.io.SequenceFile; |
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9 | import org.apache.hadoop.mapred.JobConf; |
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10 | |
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11 | import tw.org.nchc.tuple.Tuple; |
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12 | |
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13 | public class LocalTupleRecordReader { |
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14 | private LongWritable mKey = new LongWritable(); |
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15 | private SequenceFile.Reader mReader; |
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16 | |
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17 | private long cnt = 0; |
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18 | |
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19 | public LocalTupleRecordReader(String file) throws IOException { |
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20 | JobConf config = new JobConf(); |
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21 | |
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22 | mReader = new SequenceFile.Reader(FileSystem.get(config), |
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23 | new Path(file), config); |
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24 | } |
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25 | |
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26 | public boolean read(Tuple tuple) throws IOException { |
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27 | if (mReader.next(mKey, tuple) == true) { |
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28 | cnt++; |
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29 | } else { |
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30 | return false; |
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31 | } |
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32 | |
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33 | return true; |
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34 | } |
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35 | |
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36 | public long getRecordCount() { |
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37 | return cnt; |
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38 | } |
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39 | |
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40 | public void close() throws IOException { |
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41 | mReader.close(); |
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42 | } |
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43 | |
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44 | } |
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