Java Code Examples for org.apache.pig.data.DataBag#spill()
The following examples show how to use
org.apache.pig.data.DataBag#spill() .
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Example 1
Source File: ReverseEnumerate.java From datafu with Apache License 2.0 | 6 votes |
public DataBag call(DataBag inputBag) throws IOException { DataBag outputBag = BagFactory.getInstance().newDefaultBag(); long i = start, count = 0; i = inputBag.size() - 1 + start; for (Tuple t : inputBag) { Tuple t1 = TupleFactory.getInstance().newTuple(t.getAll()); t1.append(i); outputBag.add(t1); if (count % 1000000 == 0) { outputBag.spill(); count = 0; } i--; count++; } return outputBag; }
Example 2
Source File: MarkovPairs.java From datafu with Apache License 2.0 | 6 votes |
private void generatePairs(ArrayList<Tuple> input, int start, int end, DataBag outputBag) throws ExecException { int count = 0; for (int i = start; (i + 1)<= end; i++) { Tuple elem1 = input.get(i); lookahead: for (int j = i+1; j <= i + lookahead_steps; j++) { if (j > end) break lookahead; Tuple elem2 = input.get(j); if (count >= SPILL_THRESHOLD) { outputBag.spill(); count = 0; } outputBag.add(tupleFactory.newTuple(Arrays.asList(elem1, elem2))); count ++; } } }
Example 3
Source File: UnorderedPairs.java From datafu with Apache License 2.0 | 5 votes |
@Override public DataBag exec(Tuple input) throws IOException { PigStatusReporter reporter = PigStatusReporter.getInstance(); try { DataBag inputBag = (DataBag) input.get(0); DataBag outputBag = bagFactory.newDefaultBag(); long i=0, j, cnt=0; if (inputBag != null) { for (Tuple elem1 : inputBag) { j = 0; for (Tuple elem2 : inputBag) { if (j > i) { outputBag.add(tupleFactory.newTuple(Arrays.asList(elem1, elem2))); cnt++; } j++; if (reporter != null) reporter.progress(); if (cnt % 1000000 == 0) { outputBag.spill(); cnt = 0; } } i++; } } return outputBag; } catch (Exception e) { throw new RuntimeException("Caught exception processing input of " + this.getClass().getName(), e); } }