Examples of org.apache.hadoop.hbase.regionserver.compactions.CompactionContext.select()

org.apache.hadoop.hbase.regionserver.compactions.CompactionContext.select()
Called to select files for compaction. Must fill in the request field if successful. @param filesCompacting Files currently being compacted by other compactions. @param isUserCompaction Whether this is a user compaction. @param mayUseOffPeak Whether the underlying policy may assume it's off-peak hours. @param forceMajor Whether to force major compaction. @return Whether the selection succeeded. Selection may be empty and lead to no compaction.


        // Normal case - coprocessor is not overriding file selection.
        if (!compaction.hasSelection()) {
          boolean isUserCompaction = priority == Store.PRIORITY_USER;
          boolean mayUseOffPeak = this.offPeakCompactions.tryStartOffPeakRequest();
          compaction.select(this.filesCompacting, isUserCompaction,
              mayUseOffPeak, forceMajor && filesCompacting.isEmpty());
          assert compaction.hasSelection();
          if (mayUseOffPeak && !compaction.getRequest().isOffPeak()) {
            // Compaction policy doesn't want to take advantage of off-peak.
            this.offPeakCompactions.endOffPeakRequest();

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        if (!compaction.hasSelection()) {
          boolean isUserCompaction = priority == Store.PRIORITY_USER;
          boolean mayUseOffPeak = offPeakHours.isOffPeakHour() &&
              offPeakCompactionTracker.compareAndSet(false, true);
          try {
            compaction.select(this.filesCompacting, isUserCompaction,
              mayUseOffPeak, forceMajor && filesCompacting.isEmpty());
          } catch (IOException e) {
            if (mayUseOffPeak) {
              offPeakCompactionTracker.set(false);
            }

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        if (!compaction.hasSelection()) {
          boolean isUserCompaction = priority == Store.PRIORITY_USER;
          boolean mayUseOffPeak = offPeakHours.isOffPeakHour() &&
              offPeakCompactionTracker.compareAndSet(false, true);
          try {
            compaction.select(this.filesCompacting, isUserCompaction,
              mayUseOffPeak, forceMajor && filesCompacting.isEmpty());
          } catch (IOException e) {
            if (mayUseOffPeak) {
              offPeakCompactionTracker.set(false);
            }

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    StoreFile sf = createFile();
    ArrayList<StoreFile> compactUs = al(sf, createFile(), createFile());
    se.getStoreFileManager().loadFiles(compactUs);
    // Create a compaction that would want to split the stripe.
    CompactionContext compaction = se.createCompaction();
    compaction.select(al(), false, false, false);
    assertEquals(3, compaction.getRequest().getFiles().size());
    // Override the file list. Granted, overriding this compaction in this manner will
    // break things in real world, but we only want to verify the override.
    compactUs.remove(sf);
    CompactionRequest req = new CompactionRequest(compactUs);

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    public synchronized CompactionContext selectCompaction() {
      CompactionContext ctx = new TestCompactionContext(new ArrayList<StoreFile>(notCompacting));
      compacting.addAll(notCompacting);
      notCompacting.clear();
      try {
        ctx.select(null, false, false, false);
      } catch (IOException ex) {
        fail("Shouldn't happen");
      }
      return ctx;
    }

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    public synchronized CompactionContext selectCompaction() {
      CompactionContext ctx = new TestCompactionContext(new ArrayList<StoreFile>(notCompacting));
      compacting.addAll(notCompacting);
      notCompacting.clear();
      try {
        ctx.select(null, false, false, false);
      } catch (IOException ex) {
        fail("Shouldn't happen");
      }
      return ctx;
    }

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    StoreFile sf = createFile();
    ArrayList<StoreFile> compactUs = al(sf, createFile(), createFile());
    se.getStoreFileManager().loadFiles(compactUs);
    // Create a compaction that would want to split the stripe.
    CompactionContext compaction = se.createCompaction();
    compaction.select(al(), false, false, false);
    assertEquals(3, compaction.getRequest().getFiles().size());
    // Override the file list. Granted, overriding this compaction in this manner will
    // break things in real world, but we only want to verify the override.
    compactUs.remove(sf);
    CompactionRequest req = new CompactionRequest(compactUs);

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        if (!compaction.hasSelection()) {
          boolean isUserCompaction = priority == Store.PRIORITY_USER;
          boolean mayUseOffPeak = offPeakHours.isOffPeakHour() &&
              offPeakCompactionTracker.compareAndSet(false, true);
          try {
            compaction.select(this.filesCompacting, isUserCompaction,
              mayUseOffPeak, forceMajor && filesCompacting.isEmpty());
          } catch (IOException e) {
            if (mayUseOffPeak) {
              offPeakCompactionTracker.set(false);
            }

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        if (!compaction.hasSelection()) {
          boolean isUserCompaction = priority == Store.PRIORITY_USER;
          boolean mayUseOffPeak = offPeakHours.isOffPeakHour() &&
              offPeakCompactionTracker.compareAndSet(false, true);
          try {
            compaction.select(this.filesCompacting, isUserCompaction,
              mayUseOffPeak, forceMajor && filesCompacting.isEmpty());
          } catch (IOException e) {
            if (mayUseOffPeak) {
              offPeakCompactionTracker.set(false);
            }

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