Package org.apache.hadoop.hbase.regionserver.MemStoreLAB

Examples of org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation

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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc != null && alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMemstoreTS(kv.getMemstoreTS());
    return newKv;
  }
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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc != null && alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMemstoreTS(kv.getMemstoreTS());
    return newKv;
  }
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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc != null && alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMvccVersion(kv.getMvccVersion());
    return newKv;
  }
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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc != null && alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMemstoreTS(kv.getMemstoreTS());
    return newKv;
  }
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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMvccVersion(kv.getMvccVersion());
    return newKv;
  }
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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc != null && alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMemstoreTS(kv.getMemstoreTS());
    return newKv;
  }
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    if (allocator == null) {
      return kv;
    }

    int len = kv.getLength();
    Allocation alloc = allocator.allocateBytes(len);
    if (alloc == null) {
      // The allocation was too large, allocator decided
      // not to do anything with it.
      return kv;
    }
    assert alloc.getData() != null;
    System.arraycopy(kv.getBuffer(), kv.getOffset(), alloc.getData(), alloc.getOffset(), len);
    KeyValue newKv = new KeyValue(alloc.getData(), alloc.getOffset(), len);
    newKv.setMvccVersion(kv.getMvccVersion());
    return newKv;
  }
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    // 100K iterations by 0-1K alloc -> 50MB expected
    // should be reasonable for unit test and also cover wraparound
    // behavior
    for (int i = 0; i < 100000; i++) {
      int size = rand.nextInt(1000);
      Allocation alloc = mslab.allocateBytes(size);
     
      if (alloc.getData() != lastBuffer) {
        expectedOff = 0;
        lastBuffer = alloc.getData();
      }
      assertEquals(expectedOff, alloc.getOffset());
      assertTrue("Allocation " + alloc + " overruns buffer",
          alloc.getOffset() + size <= alloc.getData().length);
      expectedOff += size;
    }
  }
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  }

  @Test
  public void testLABLargeAllocation() {
    MemStoreLAB mslab = new MemStoreLAB();
    Allocation alloc = mslab.allocateBytes(2*1024*1024);
    assertNull("2MB allocation shouldn't be satisfied by LAB.",
      alloc);
  }
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      TestThread t = new MultithreadedTestUtil.RepeatingTestThread(ctx) {
        private Random r = new Random();
        @Override
        public void doAnAction() throws Exception {
          int size = r.nextInt(1000);
          Allocation alloc = mslab.allocateBytes(size);
          totalAllocated.addAndGet(size);
          allocsByThisThread.add(new AllocRecord(alloc, size));
        }
      };
      ctx.addThread(t);
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Related Classes of org.apache.hadoop.hbase.regionserver.MemStoreLAB.Allocation

  • org.apache.hadoop.hbase.regionserver.MemStore
  • org.apache.hadoop.hbase.regionserver.TestMemStoreChunkPool
  • org.apache.hadoop.hbase.regionserver.TestMemStoreLAB
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