@Override
public void afterOperation(
LSMOperationType opType, List<ILSMComponent> oldComponents, ILSMComponent newComponent)
throws HyracksDataException {
if (newComponent != null) {
LSMRTreeDiskComponent rtreeComponent = (LSMRTreeDiskComponent) newComponent;
putLSNIntoMetadata(rtreeComponent.getRTree(), oldComponents);
putLSNIntoMetadata(rtreeComponent.getBTree(), oldComponents);
}
}
@Override
public long getComponentLSN(List<ILSMComponent> diskComponents) throws HyracksDataException {
if (diskComponents == null) {
// Implies a flush IO operation.
synchronized (this) {
long lsn = mutableLastLSNs[readIndex];
return lsn;
}
}
// Get max LSN from the diskComponents. Implies a merge IO operation or Recovery operation.
long maxLSN = -1;
for (Object o : diskComponents) {
LSMRTreeDiskComponent rtreeComponent = (LSMRTreeDiskComponent) o;
maxLSN = Math.max(getTreeIndexLSN(rtreeComponent.getRTree()), maxLSN);
}
return maxLSN;
}