def _delete(self, table_name, keys):
batch_writer = BatchWriter(conn=self.conn,
table=self._ns(table_name),
max_memory=self._max_memory,
latency_ms=self._latency_ms,
timeout_ms=self._timeout_ms,
threads=self._threads)
try:
for key in keys:
mut = Mutation(key)
mut.put(cf='', cq='', is_delete=True)
batch_writer.add_mutation(mut)
finally:
batch_writer.close()
def _put(self, table_name, keys_and_values, counter_deletes=True):
cur_bytes = 0
max_bytes = self.thrift_framed_transport_size_in_mb * 2 ** 19
batch_writer = BatchWriter(conn=self.conn,
table=self._ns(table_name),
max_memory=self._max_memory,
latency_ms=self._latency_ms,
timeout_ms=self._timeout_ms,
threads=self._threads)
try:
# Because COUNTER is implemented via a summing accumulator,
# to do a put we need to delete all of the old values before
# restarting the sum.
if ((self._value_types.get(table_name, str) is COUNTER and
counter_deletes)):
for key, blob in keys_and_values:
mut = Mutation(key)
mut.put(cf='', cq='', is_delete=True)
batch_writer.add_mutation(mut)
batch_writer.flush()
for key, blob in keys_and_values:
if len(key) + len(blob) + cur_bytes >= max_bytes:
logger.debug(
'len(key)=%d + len(blob)=%d + cur_bytes=%d >= '
'thrift_framed_transport_size_in_mb/2 = %d',
len(key), len(blob), cur_bytes, max_bytes)
logger.debug(
'pre-emptively sending only what has been '
'batched, and will send this item in next '
'batch.')
batch_writer.flush()
cur_bytes = 0
cur_bytes += len(key) + len(blob)
mut = Mutation(key)
mut.put(cf='', cq='', val=blob)
batch_writer.add_mutation(mut)
finally:
batch_writer.close()