/**
* returns true if the specified entry must be replicated. We should always replicate meta
* operations (e.g. flush) and use the user HTD flag to decide whether or not replicate the
* memstore.
*/
private boolean requiresReplication(final TableName tableName, final List<Entry> entries)
throws IOException {
// unit-tests may not the TableDescriptors, bypass the check and always replicate
if (tableDescriptors == null) return true;
Boolean requiresReplication = memstoreReplicationEnabled.getIfPresent(tableName);
if (requiresReplication == null) {
// check if the table requires memstore replication
// some unit-test drop the table, so we should do a bypass check and always replicate.
HTableDescriptor htd = tableDescriptors.get(tableName);
requiresReplication = htd == null || htd.hasRegionMemstoreReplication();
memstoreReplicationEnabled.put(tableName, requiresReplication);
}
// if memstore replication is not required, check the entries.
// meta edits (e.g. flush) must be always replicated.
if (!requiresReplication) {
int skipEdits = 0;
java.util.Iterator<Entry> it = entries.iterator();
while (it.hasNext()) {
Entry entry = it.next();
if (entry.getEdit().isMetaEdit()) {
requiresReplication = true;
} else {
it.remove();
skipEdits++;
}
}
skippedEdits.addAndGet(skipEdits);
}
return requiresReplication;
}
@Override
public Entry filter(Entry entry) {
// if orig seq id is set, skip replaying the entry
if (entry.getKey().getOrigLogSeqNum() > 0) {
return null;
}
return entry;
}