cassandra.yaml in rubber-2.0.1

- old
+ new
@@ -7,204 +7,445 @@
 # explanations of configuration directives.
 
 # name of the cluster
 cluster_name: '<%= rubber_env.app_name %>_<%= Rubber.env %>_cluster'
 
+# Set to true to make new [non-seed] nodes automatically migrate data
+# to themselves from the pre-existing nodes in the cluster.  Defaults
+# to false because you can only bootstrap N machines at a time from
+# an existing cluster of N, so if you are bringing up a cluster of
+# 10 machines with 3 seeds you would have to do it in stages.  Leaving
+# this off for the initial start simplifies that.
+auto_bootstrap: <%= rubber_instances.for_role("cassandra").size > 1 ? "true" : "false" %>
+
+# You should always specify InitialToken when setting up a production
+# cluster for the first time, and often when adding capacity later.
+# The principle is that each node should be given an equal slice of
+# the token ring; see http://wiki.apache.org/cassandra/Operations
+# for more details.
+#
+# If blank, Cassandra will request a token bisecting the range of
+# the heaviest-loaded existing node.  If there is no load information
+# available, such as is the case with a new cluster, it will pick
+# a random token, which will lead to hot spots.
+
 # Set to true to make new [non-seed] nodes automatically migrate the
 # right data to themselves.
-auto_bootstrap: <%= rubber_instances.for_role("cassandra").size > 1 ? "true" : "false" %>
+#
+# initial_token:
 
 # authentication backend, implementing IAuthenticator; used to limit keyspace access
+# See http://wiki.apache.org/cassandra/HintedHandoff
+hinted_handoff_enabled: true
+# this defines the maximum amount of time a dead host will have hints
+# generated.  After it has been dead this long, hints will be dropped.
+max_hint_window_in_ms: 3600000 # one hour
+# Sleep this long after delivering each hint
+hinted_handoff_throttle_delay_in_ms: 1
+
+# authentication backend, implementing IAuthenticator; used to identify users
 authenticator: org.apache.cassandra.auth.AllowAllAuthenticator
 
-# any IPartitioner may be used, including your own as long as it is on
-# the classpath.  Out of the box, Cassandra provides
-# org.apache.cassandra.dht.RandomPartitioner
-# org.apache.cassandra.dht.OrderPreservingPartitioner, and
-# org.apache.cassandra.dht.CollatingOrderPreservingPartitioner.
+# authorization backend, implementing IAuthority; used to limit access/provide permissions
+authority: org.apache.cassandra.auth.AllowAllAuthority
+
+# The partitioner is responsible for distributing rows (by key) across
+# nodes in the cluster.  Any IPartitioner may be used, including your
+# own as long as it is on the classpath.  Out of the box, Cassandra
+# provides org.apache.cassandra.dht.RandomPartitioner
+# org.apache.cassandra.dht.ByteOrderedPartitioner,
+# org.apache.cassandra.dht.OrderPreservingPartitioner (deprecated),
+# and org.apache.cassandra.dht.CollatingOrderPreservingPartitioner
+# (deprecated).
+#
+# - RandomPartitioner distributes rows across the cluster evenly by md5.
+#   When in doubt, this is the best option.
+# - ByteOrderedPartitioner orders rows lexically by key bytes.  BOP allows
+#   scanning rows in key order, but the ordering can generate hot spots
+#   for sequential insertion workloads.
+# - OrderPreservingPartitioner is an obsolete form of BOP, that stores
+# - keys in a less-efficient format and only works with keys that are
+#   UTF8-encoded Strings.
+# - CollatingOPP colates according to EN,US rules rather than lexical byte
+#   ordering.  Use this as an example if you need custom collation.
+#
+# See http://wiki.apache.org/cassandra/Operations for more on
+# partitioners and token selection.
 partitioner: org.apache.cassandra.dht.RandomPartitioner
 
 # directories where Cassandra should store data on disk.
 data_file_directories:
-    - <%= rubber_env.cassandra_data_dir %>
+    <% rubber_env.cassandra_data_dirs.each do |dir| -%>
+      - <%= dir %>
+    <% end %>
 
-# Addresses of hosts that are deemed contact points.
-# Cassandra nodes use this list of hosts to find each other and learn
-# the topology of the ring.  You must change this if you are running
-# multiple nodes!
+# commit log
+commitlog_directory: <%= rubber_env.cassandra_commitlog_dir %>
+
+# saved caches
+saved_caches_directory: <%= rubber_env.cassandra_saved_caches_dir %>
+
+# commitlog_sync may be either "periodic" or "batch."
+# When in batch mode, Cassandra won't ack writes until the commit log
+# has been fsynced to disk.  It will wait up to
+# commitlog_sync_batch_window_in_ms milliseconds for other writes, before
+# performing the sync.
+#
+# commitlog_sync: batch
+# commitlog_sync_batch_window_in_ms: 50
+#
+# the other option is "periodic" where writes may be acked immediately
+# and the CommitLog is simply synced every commitlog_sync_period_in_ms
+# milliseconds.
+commitlog_sync: periodic
+commitlog_sync_period_in_ms: 10000
+
+# any class that implements the SeedProvider interface and has a
+# constructor that takes a Map<String, String> of parameters will do.
+
 <%
   seeds = rubber_instances.for_role('cassandra_seed')
   seeds = rubber_instances.for_role('cassandra') if seeds.size == 0
   seed_hosts = seeds.collect { |i| i.full_name }
 %>
-seeds:
-    <% seed_hosts.each do |host| %>
-      - <%= host %>
-    <% end %>
 
-# Access mode.  mmapped i/o is substantially faster, but only practical on
-# a 64bit machine (which notably does not include EC2 "small" instances)
-# or relatively small datasets.  "auto", the safe choice, will enable
-# mmapping on a 64bit JVM.  Other values are "mmap", "mmap_index_only"
-# (which may allow you to get part of the benefits of mmap on a 32bit
-# machine by mmapping only index files) and "standard".
-# (The buffer size settings that follow only apply to standard,
-# non-mmapped i/o.)
-disk_access_mode: auto
+seed_provider:
+    # Addresses of hosts that are deemed contact points.
+    # Cassandra nodes use this list of hosts to find each other and learn
+    # the topology of the ring.  You must change this if you are running
+    # multiple nodes!
+    - class_name: org.apache.cassandra.locator.SimpleSeedProvider
+      parameters:
+          # seeds is actually a comma-delimited list of addresses.
+          # Ex: "<ip1>,<ip2>,<ip3>"
+          - seeds: "<%= seed_hosts.join(',') %>"
 
-# Unlike most systems, in Cassandra writes are faster than reads, so
-# you can afford more of those in parallel.  A good rule of thumb is 2
-# concurrent reads per processor core.  Increase ConcurrentWrites to
-# the number of clients writing at once if you enable CommitLogSync +
-# CommitLogSyncDelay. -->
-concurrent_reads: 8
+# emergency pressure valve: each time heap usage after a full (CMS)
+# garbage collection is above this fraction of the max, Cassandra will
+# flush the largest memtables.
+#
+# Set to 1.0 to disable.  Setting this lower than
+# CMSInitiatingOccupancyFraction is not likely to be useful.
+#
+# RELYING ON THIS AS YOUR PRIMARY TUNING MECHANISM WILL WORK POORLY:
+# it is most effective under light to moderate load, or read-heavy
+# workloads; under truly massive write load, it will often be too
+# little, too late.
+flush_largest_memtables_at: 0.75
+
+# emergency pressure valve #2: the first time heap usage after a full
+# (CMS) garbage collection is above this fraction of the max,
+# Cassandra will reduce cache maximum _capacity_ to the given fraction
+# of the current _size_.  Should usually be set substantially above
+# flush_largest_memtables_at, since that will have less long-term
+# impact on the system.
+#
+# Set to 1.0 to disable.  Setting this lower than
+# CMSInitiatingOccupancyFraction is not likely to be useful.
+reduce_cache_sizes_at: 0.85
+reduce_cache_capacity_to: 0.6
+
+# For workloads with more data than can fit in memory, Cassandra's
+# bottleneck will be reads that need to fetch data from
+# disk. "concurrent_reads" should be set to (16 * number_of_drives) in
+# order to allow the operations to enqueue low enough in the stack
+# that the OS and drives can reorder them.
+#
+# On the other hand, since writes are almost never IO bound, the ideal
+# number of "concurrent_writes" is dependent on the number of cores in
+# your system; (8 * number_of_cores) is a good rule of thumb.
+concurrent_reads: 32
 concurrent_writes: 32
 
+# Total memory to use for memtables.  Cassandra will flush the largest
+# memtable when this much memory is used.
+# If omitted, Cassandra will set it to 1/3 of the heap.
+# memtable_total_space_in_mb: 2048
+
+# Total space to use for commitlogs.
+# If space gets above this value (it will round up to the next nearest
+# segment multiple), Cassandra will flush every dirty CF in the oldest
+# segment and remove it.
+# commitlog_total_space_in_mb: 4096
+
+# This sets the amount of memtable flush writer threads.  These will
+# be blocked by disk io, and each one will hold a memtable in memory
+# while blocked. If you have a large heap and many data directories,
+# you can increase this value for better flush performance.
+# By default this will be set to the amount of data directories defined.
+#memtable_flush_writers: 1
+
+# the number of full memtables to allow pending flush, that is,
+# waiting for a writer thread.  At a minimum, this should be set to
+# the maximum number of secondary indexes created on a single CF.
+memtable_flush_queue_size: 4
+
 # Buffer size to use when performing contiguous column slices.
 # Increase this to the size of the column slices you typically perform
 sliced_buffer_size_in_kb: 64
 
 # TCP port, for commands and data
 storage_port: <%= rubber_env.cassandra_storage_port %>
 
-# Address to bind to and tell other nodes to connect to. You _must_
-# change this if you want multiple nodes to be able to communicate!
+# SSL port, for encrypted communication.  Unused unless enabled in
+# encryption_options
+ssl_storage_port: <%= rubber_env.cassandra_ssl_storage_port %>
+
+# Address to bind to and tell other Cassandra nodes to connect to. You
+# _must_ change this if you want multiple nodes to be able to
+# communicate!
+#
+# Leaving it blank leaves it up to InetAddress.getLocalHost(). This
+# will always do the Right Thing *if* the node is properly configured
+# (hostname, name resolution, etc), and the Right Thing is to use the
+# address associated with the hostname (it might not be).
+#
+# Setting this to 0.0.0.0 is always wrong.
 listen_address: <%= rubber_env.full_host %>
 
-# The address to bind the Thrift RPC service to
+# Address to broadcast to other Cassandra nodes
+# Leaving this blank will set it to the same value as listen_address
+# broadcast_address: 1.2.3.4
+
+# The address to bind the Thrift RPC service to -- clients connect
+# here. Unlike ListenAddress above, you *can* specify 0.0.0.0 here if
+# you want Thrift to listen on all interfaces.
+#
+# Leaving this blank has the same effect it does for ListenAddress,
+# (i.e. it will be based on the configured hostname of the node).
 rpc_address: <%= rubber_env.full_host %>
-# port for Thrift to listen on
+# port for Thrift to listen for clients on
 rpc_port: <%= rubber_env.cassandra_rpc_port %>
-# Whether or not to use a framed transport for Thrift.
-thrift_framed_transport: false
-snapshot_before_compaction: false
 
-# The threshold size in megabytes the binary memtable must grow to,
-# before it's submitted for flushing to disk.
-binary_memtable_throughput_in_mb: 256
-# Number of minutes to keep a memtable in memory
-memtable_flush_after_mins: 60
-# Size of the memtable in memory before it is dumped
-memtable_throughput_in_mb: 64
-# Number of objects in millions in the memtable before it is dumped
-memtable_operations_in_millions: 0.3
-# Buffer size to use when flushing !memtables to disk.
-flush_data_buffer_size_in_mb: 32
-# Increase (decrease) the index buffer size relative to the data
-# buffer if you have few (many) columns per key.
-flush_index_buffer_size_in_mb: 8
+# enable or disable keepalive on rpc connections
+rpc_keepalive: true
 
+# Cassandra provides three options for the RPC Server:
+#
+# sync  -> One connection per thread in the rpc pool (see below).
+#          For a very large number of clients, memory will be your limiting
+#          factor; on a 64 bit JVM, 128KB is the minimum stack size per thread.
+#          Connection pooling is very, very strongly recommended.
+#
+# async -> Nonblocking server implementation with one thread to serve
+#          rpc connections.  This is not recommended for high throughput use
+#          cases. Async has been tested to be about 50% slower than sync
+#          or hsha and is deprecated: it will be removed in the next major release.
+#
+# hsha  -> Stands for "half synchronous, half asynchronous." The rpc thread pool
+#          (see below) is used to manage requests, but the threads are multiplexed
+#          across the different clients.
+#
+# The default is sync because on Windows hsha is about 30% slower.  On Linux,
+# sync/hsha performance is about the same, with hsha of course using less memory.
+rpc_server_type: sync
+
+# Uncomment rpc_min|max|thread to set request pool size.
+# You would primarily set max for the sync server to safeguard against
+# misbehaved clients; if you do hit the max, Cassandra will block until one
+# disconnects before accepting more.  The defaults for sync are min of 16 and max
+# unlimited.
+#
+# For the Hsha server, the min and max both default to quadruple the number of
+# CPU cores.
+#
+# This configuration is ignored by the async server.
+#
+# rpc_min_threads: 16
+# rpc_max_threads: 2048
+
+# uncomment to set socket buffer sizes on rpc connections
+# rpc_send_buff_size_in_bytes:
+# rpc_recv_buff_size_in_bytes:
+
+# Frame size for thrift (maximum field length).
+# 0 disables TFramedTransport in favor of TSocket. This option
+# is deprecated; we strongly recommend using Framed mode.
+thrift_framed_transport_size_in_mb: 15
+
+# The max length of a thrift message, including all fields and
+# internal thrift overhead.
+thrift_max_message_length_in_mb: 16
+
+# Set to true to have Cassandra create a hard link to each sstable
+# flushed or streamed locally in a backups/ subdirectory of the
+# Keyspace data.  Removing these links is the operator's
+# responsibility.
+incremental_backups: false
+
+# Whether or not to take a snapshot before each compaction.  Be
+# careful using this option, since Cassandra won't clean up the
+# snapshots for you.  Mostly useful if you're paranoid when there
+# is a data format change.
+snapshot_before_compaction: false
+
+# Add column indexes to a row after its contents reach this size.
+# Increase if your column values are large, or if you have a very large
+# number of columns.  The competing causes are, Cassandra has to
+# deserialize this much of the row to read a single column, so you want
+# it to be small - at least if you do many partial-row reads - but all
+# the index data is read for each access, so you don't want to generate
+# that wastefully either.
 column_index_size_in_kb: 64
-row_warning_threshold_in_mb: 512
 
-# commit log
-commitlog_directory: <%= rubber_env.cassandra_commitlog_dir %>
+# Size limit for rows being compacted in memory.  Larger rows will spill
+# over to disk and use a slower two-pass compaction process.  A message
+# will be logged specifying the row key.
+in_memory_compaction_limit_in_mb: 64
 
-# Size to allow commitlog to grow to before creating a new segment
-commitlog_rotation_threshold_in_mb: 128
+# Number of simultaneous compactions to allow, NOT including
+# validation "compactions" for anti-entropy repair.  Simultaneous
+# compactions can help preserve read performance in a mixed read/write
+# workload, by mitigating the tendency of small sstables to accumulate
+# during a single long running compactions. The default is usually
+# fine and if you experience problems with compaction running too
+# slowly or too fast, you should look at
+# compaction_throughput_mb_per_sec first.
+#
+# This setting has no effect on LeveledCompactionStrategy.
+#
+# concurrent_compactors defaults to the number of cores.
+# Uncomment to make compaction mono-threaded, the pre-0.8 default.
+#concurrent_compactors: 1
 
-# commitlog_sync may be either "periodic" or "batch."
-# When in batch mode, Cassandra won't ack writes until the commit log
-# has been fsynced to disk.  It will wait up to
-# CommitLogSyncBatchWindowInMS milliseconds for other writes, before
-# performing the sync.
-commitlog_sync: periodic
+# Multi-threaded compaction. When enabled, each compaction will use
+# up to one thread per core, plus one thread per sstable being merged.
+# This is usually only useful for SSD-based hardware: otherwise,
+# your concern is usually to get compaction to do LESS i/o (see:
+# compaction_throughput_mb_per_sec), not more.
+multithreaded_compaction: false
 
-# the other option is "timed," where writes may be acked immediately
-# and the CommitLog is simply synced every commitlog_sync_period_in_ms
-# milliseconds.
-commitlog_sync_period_in_ms: 10000
+# Throttles compaction to the given total throughput across the entire
+# system. The faster you insert data, the faster you need to compact in
+# order to keep the sstable count down, but in general, setting this to
+# 16 to 32 times the rate you are inserting data is more than sufficient.
+# Setting this to 0 disables throttling. Note that this account for all types
+# of compaction, including validation compaction.
+compaction_throughput_mb_per_sec: 16
 
+# Track cached row keys during compaction, and re-cache their new
+# positions in the compacted sstable.  Disable if you use really large
+# key caches.
+compaction_preheat_key_cache: true
+
+# Throttles all outbound streaming file transfers on this node to the
+# given total throughput in Mbps. This is necessary because Cassandra does
+# mostly sequential IO when streaming data during bootstrap or repair, which
+# can lead to saturating the network connection and degrading rpc performance.
+# When unset, the default is 400 Mbps or 50 MB/s.
+# stream_throughput_outbound_megabits_per_sec: 400
+
 # Time to wait for a reply from other nodes before failing the command
 rpc_timeout_in_ms: 10000
 
-# time to wait before garbage collecting tombstones (deletion markers)
-gc_grace_seconds: 864000
+# phi value that must be reached for a host to be marked down.
+# most users should never need to adjust this.
+# phi_convict_threshold: 8
 
 # endpoint_snitch -- Set this to a class that implements
 # IEndpointSnitch, which will let Cassandra know enough
 # about your network topology to route requests efficiently.
 # Out of the box, Cassandra provides
-# org.apache.cassandra.locator.SimpleSnitch,
-# org.apache.cassandra.locator.RackInferringSnitch, and
-# org.apache.cassandra.locator.PropertyFileSnitch.
+#  - org.apache.cassandra.locator.SimpleSnitch:
+#    Treats Strategy order as proximity. This improves cache locality
+#    when disabling read repair, which can further improve throughput.
+#  - org.apache.cassandra.locator.RackInferringSnitch:
+#    Proximity is determined by rack and data center, which are
+#    assumed to correspond to the 3rd and 2nd octet of each node's
+#    IP address, respectively
+# org.apache.cassandra.locator.PropertyFileSnitch:
+#  - Proximity is determined by rack and data center, which are
+#    explicitly configured in cassandra-topology.properties.
 endpoint_snitch: org.apache.cassandra.locator.SimpleSnitch
 
-# A ColumnFamily is the Cassandra concept closest to a relational table.
-#
-# Keyspaces are separate groups of ColumnFamilies.  Except in very
-# unusual circumstances you will have one Keyspace per application.
-#
-# Keyspace required parameters:
-# - name: name of the keyspace; "system" and "definitions" are
-#   reserved for Cassandra Internals.
-# - replica_placement_strategy: the class that determines how replicas
-#   are distributed among nodes.  Must implement IReplicaPlacementStrategy.
-#   Out of the box, Cassandra provides
-#   org.apache.cassandra.locator.RackUnawareStrategy and
-#   org.apache.cassandra.locator.RackAwareStrategy.  RackAwareStrategy
-#   place one replica in each of two datacenter, and other replicas in
-#   different racks in one.
-# - replication_factor: Number of replicas of each row
-# - column_families: column families associated with this keyspace
-#
-# ColumnFamily required parameters:
-# - name: name of the ColumnFamily.  Must not contain the character "-".
-# - compare_with: tells Cassandra how to sort the columns for slicing
-#   operations. The default is BytesType, which is a straightforward
-#   lexical comparison of the bytes in each column.  Other options are
-#   AsciiType, UTF8Type, LexicalUUIDType, TimeUUIDType, and LongType.
-#   You can also specify the fully-qualified class name to a class of
-#   your choice extending org.apache.cassandra.db.marshal.AbstractType.
-#
-# ColumnFamily optional parameters:
-# - keys_cached: specifies the number of keys per sstable whose
-#   locations we keep in memory in "mostly LRU" order.  (JUST the key
-#   locations, NOT any column values.) Specify a fraction (value less
-#   than 1) or an absolute number of keys to cache.  Defaults to 200000
-#   keys.
-# - rows_cached: specifies the number of rows whose entire contents we
-#   cache in memory. Do not use this on ColumnFamilies with large rows,
-#   or ColumnFamilies with high write:read ratios. Specify a fraction
-#   (value less than 1) or an absolute number of rows to cache.
-#   Defaults to 0. (i.e. row caching is off by default)
-# - comment: used to attach additional human-readable information about
-#   the column family to its definition.
-# - read_repair_chance: specifies the probability with which read
-#   repairs should be invoked on non-quorum reads.  must be between 0
-#   and 1. defaults to 1.0 (always read repair).
-# - preload_row_cache: If true, will populate row cache on startup.
-#   Defaults to false.
-#
-keyspaces:
-    - name: <%= rubber_env.app_name.capitalize %>
-      replica_placement_strategy: org.apache.cassandra.locator.RackUnawareStrategy
-      replication_factor: 1
-      column_families:
-        - name: Standard1
-          compare_with: BytesType
+# controls how often to perform the more expensive part of host score
+# calculation
+dynamic_snitch_update_interval_in_ms: 100
+# controls how often to reset all host scores, allowing a bad host to
+# possibly recover
+dynamic_snitch_reset_interval_in_ms: 600000
+# if set greater than zero and read_repair_chance is < 1.0, this will allow
+# 'pinning' of replicas to hosts in order to increase cache capacity.
+# The badness threshold will control how much worse the pinned host has to be
+# before the dynamic snitch will prefer other replicas over it.  This is
+# expressed as a double which represents a percentage.  Thus, a value of
+# 0.2 means Cassandra would continue to prefer the static snitch values
+# until the pinned host was 20% worse than the fastest.
+dynamic_snitch_badness_threshold: 0.1
 
-        - name: Standard2
-          compare_with: UTF8Type
-          read_repair_chance: 0.1
-          keys_cached: 100
+# request_scheduler -- Set this to a class that implements
+# RequestScheduler, which will schedule incoming client requests
+# according to the specific policy. This is useful for multi-tenancy
+# with a single Cassandra cluster.
+# NOTE: This is specifically for requests from the client and does
+# not affect inter node communication.
+# org.apache.cassandra.scheduler.NoScheduler - No scheduling takes place
+# org.apache.cassandra.scheduler.RoundRobinScheduler - Round robin of
+# client requests to a node with a separate queue for each
+# request_scheduler_id. The scheduler is further customized by
+# request_scheduler_options as described below.
+request_scheduler: org.apache.cassandra.scheduler.NoScheduler
 
-        - name: StandardByUUID1
-          compare_with: TimeUUIDType
+# Scheduler Options vary based on the type of scheduler
+# NoScheduler - Has no options
+# RoundRobin
+#  - throttle_limit -- The throttle_limit is the number of in-flight
+#                      requests per client.  Requests beyond
+#                      that limit are queued up until
+#                      running requests can complete.
+#                      The value of 80 here is twice the number of
+#                      concurrent_reads + concurrent_writes.
+#  - default_weight -- default_weight is optional and allows for
+#                      overriding the default which is 1.
+#  - weights -- Weights are optional and will default to 1 or the
+#               overridden default_weight. The weight translates into how
+#               many requests are handled during each turn of the
+#               RoundRobin, based on the scheduler id.
+#
+# request_scheduler_options:
+#    throttle_limit: 80
+#    default_weight: 5
+#    weights:
+#      Keyspace1: 1
+#      Keyspace2: 5
 
-        - name: Super1
-          column_type: Super
-          compare_with: BytesType
-          compare_subcolumns_with: BytesType
+# request_scheduler_id -- An identifer based on which to perform
+# the request scheduling. Currently the only valid option is keyspace.
+# request_scheduler_id: keyspace
 
-        - name: Super2
-          column_type: Super
-          compare_subcolumns_with: UTF8Type
-          preload_row_cache: true
-          rows_cached: 10000
-          keys_cached: 50
-          comment: 'A column family with supercolumns, whose column and subcolumn names are UTF8 strings'
+# index_interval controls the sampling of entries from the primrary
+# row index in terms of space versus time.  The larger the interval,
+# the smaller and less effective the sampling will be.  In technicial
+# terms, the interval coresponds to the number of index entries that
+# are skipped between taking each sample.  All the sampled entries
+# must fit in memory.  Generally, a value between 128 and 512 here
+# coupled with a large key cache size on CFs results in the best trade
+# offs.  This value is not often changed, however if you have many
+# very small rows (many to an OS page), then increasing this will
+# often lower memory usage without a impact on performance.
+index_interval: 128
 
-        - name: Super3
-          column_type: Super
-          compare_with: LongType
-          comment: 'A column family with supercolumns, whose column names are Longs (8 bytes)'
+# Enable or disable inter-node encryption
+# Default settings are TLS v1, RSA 1024-bit keys (it is imperative that
+# users generate their own keys) TLS_RSA_WITH_AES_128_CBC_SHA as the cipher
+# suite for authentication, key exchange and encryption of the actual data transfers.
+# NOTE: No custom encryption options are enabled at the moment
+# The available internode options are : all, none, dc, rack
+#
+# If set to dc cassandra will encrypt the traffic between the DCs
+# If set to rack cassandra will encrypt the traffic between the racks
+#
+# The passwords used in these options must match the passwords used when generating
+# the keystore and truststore.  For instructions on generating these files, see:
+# http://download.oracle.com/javase/6/docs/technotes/guides/security/jsse/JSSERefGuide.html#CreateKeystore
+#
+encryption_options:
+    internode_encryption: none
+    keystore: conf/.keystore
+    keystore_password: cassandra
+    truststore: conf/.truststore
+    truststore_password: cassandra
+    # More advanced defaults below:
+    # protocol: TLS
+    # algorithm: SunX509
+    # store_type: JKS
+    # cipher_suites: [TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA]