/** How many copies of this block is pending replication? */
int getNumReplicas(Block block) {
synchronized (pendingReplications) {
PendingBlockInfo found = pendingReplications.get(block);
if (found != null) {
return found.getNumReplicas();
}
}
return 0;
}
/**
* One replication request for this block has finished. Decrement the number of pending
* replication requests for this block.
*/
void remove(Block block) {
synchronized (pendingReplications) {
PendingBlockInfo found = pendingReplications.get(block);
if (found != null) {
FSNamesystem.LOG.debug("Removing pending replication for block" + block);
found.decrementReplicas();
if (found.getNumReplicas() <= 0) {
pendingReplications.remove(block);
}
}
}
}