Database Reference
In-Depth Information
Property
Default
Description
“Test cluster”
This is to restrict node to join in one logical cluster
only.
cluster_name
Disabled, not specified
If not specified, default value is 1. For example, if
you want to enable virtual node support while
bootstrapping a node, you need to set
num_tokens
parameter. Recommended value is
256.
num_tokens
initial_token
N/A
Assigns a data range for node. While bootstrap-
ping a node, it is recommended to assign a value.
If left unspecified, a random token will be as-
signed by Cassandra. For Random partitioning
schema, the way to calculate a
initial_token
is:
i * (2**127 / N)
for i = 0 .. N-1. N is number of nodes.
True
With a consistency level ANY, if replica node is
down, then the corresponding write request will be
stored down on coordinator node as a hint in sys-
tem.hints column family. This is used to replay the
mutation object, once replica node starts accepting
write requests.
hinted_handoff_enabled
3 hours
Maximum wait time for a dead node until new
hints meant to be written on coordinator node.
After the hint window expires, no more new hints
will be stored.
If left unspecified, the default value is 1 hour. This
property is used when writing hints on the co-
ordinator node. If the gossip protocol end point
down time for a specific replica node is greater
than the specified Maximum wait time value, then
no new hints can be written by the StorageProxy
service on the coordinator node.
max_hint_window_in_ms
1024
kb/sec hint data flow/per thread.
hinted_handoff_throttle_in_kb
2
Maximum number of allowed threads to send data
hints. Useful when writing hints across multiple
data centers.
max_hints_delivery_threads
False
Set it to true, if complete data on a node can fit in-
to memory. Since Cassandra 1.2.2, we can also set
this parameter per column family as well.
ht-
populate_io_cache_on_flush
