/** Remove the specified number of blocks to be invalidated */
public Block[] getInvalidateBlocks(int maxblocks) {
synchronized (invalidateBlocks) {
Block[] deleteList =
invalidateBlocks.pollToArray(new Block[Math.min(invalidateBlocks.size(), maxblocks)]);
return deleteList.length == 0 ? null : deleteList;
}
}
/** Print the contents to out. */
synchronized void dump(final PrintWriter out) {
final int size = node2blocks.values().size();
out.println("Metasave: Blocks " + numBlocks + " waiting deletion from " + size + " datanodes.");
if (size == 0) {
return;
}
for (Map.Entry<DatanodeInfo, LightWeightHashSet<Block>> entry : node2blocks.entrySet()) {
final LightWeightHashSet<Block> blocks = entry.getValue();
if (blocks.size() > 0) {
out.println(entry.getKey());
out.println(blocks);
}
}
}
@Override
public String dumpDatanode() {
StringBuilder sb = new StringBuilder(super.dumpDatanode());
int repl = replicateBlocks.size();
if (repl > 0) {
sb.append(" ").append(repl).append(" blocks to be replicated;");
}
int inval = invalidateBlocks.size();
if (inval > 0) {
sb.append(" ").append(inval).append(" blocks to be invalidated;");
}
int recover = recoverBlocks.size();
if (recover > 0) {
sb.append(" ").append(recover).append(" blocks to be recovered;");
}
return sb.toString();
}
/** Remove a storage from the invalidatesSet */
synchronized void remove(final DatanodeInfo dn) {
final LightWeightHashSet<Block> blocks = node2blocks.remove(dn);
if (blocks != null) {
numBlocks -= blocks.size();
}
}
/** The number of block invalidation items that are pending to be sent to the datanode */
int getNumberOfBlocksToBeInvalidated() {
synchronized (invalidateBlocks) {
return invalidateBlocks.size();
}
}