How to use

put

method

in

org.apache.cassandra.db.Memtable

/**
 * Insert/Update the column family for this key.
 * Caller is responsible for acquiring Keyspace.switchLock
 * param @ lock - lock that needs to be used.
 * param @ key - key for update/insert
 * param @ columnFamily - columnFamily changes
 */
public void apply(DecoratedKey key, ColumnFamily columnFamily, SecondaryIndexManager.Updater indexer, OpOrder.Group opGroup, ReplayPosition replayPosition)
{
  long start = System.nanoTime();
  Memtable mt = data.getMemtableFor(opGroup, replayPosition);
  final long timeDelta = mt.put(key, columnFamily, indexer, opGroup);
  maybeUpdateRowCache(key);
  metric.samplers.get(Sampler.WRITES).addSample(key.getKey(), key.hashCode(), 1);
  metric.writeLatency.addNano(System.nanoTime() - start);
  if(timeDelta < Long.MAX_VALUE)
    metric.colUpdateTimeDeltaHistogram.update(timeDelta);
}

long timeDelta = mt.put(update, indexer, opGroup);
DecoratedKey key = update.partitionKey();
invalidateCachedPartition(key);

long timeDelta = mt.put(update, indexer, opGroup);
DecoratedKey key = update.partitionKey();
invalidateCachedPartition(key);

long timeDelta = mt.put(update, indexer, opGroup);
DecoratedKey key = update.partitionKey();
invalidateCachedPartition(key);