# Node running mode, see `standalone.example.toml`.
mode = "distributed"
# The datanode identifier, should be unique.
node_id = 42
# gRPC server address, "127.0.0.1:3001" by default.
rpc_addr = "127.0.0.1:3001"
# Hostname of this node.
rpc_hostname = "127.0.0.1"
# The number of gRPC server worker threads, 8 by default.
rpc_runtime_size = 8
# Start services after regions have obtained leases.
# It will block the datanode start if it can't receive leases in the heartbeat from metasrv.
require_lease_before_startup = false

# Initialize all regions in the background during the startup.
# By default, it provides services after all regions have been initialized.
init_regions_in_background = false

[heartbeat]
# Interval for sending heartbeat messages to the Metasrv, 3 seconds by default.
interval = "3s"

# Metasrv client options.
[meta_client]
# Metasrv address list.
metasrv_addrs = ["127.0.0.1:3002"]
# Heartbeat timeout, 500 milliseconds by default.
heartbeat_timeout = "500ms"
# Operation timeout, 3 seconds by default.
timeout = "3s"
# Connect server timeout, 1 second by default.
connect_timeout = "1s"
# `TCP_NODELAY` option for accepted connections, true by default.
tcp_nodelay = true

# WAL options.
[wal]
provider = "raft_engine"

# Raft-engine wal options, see `standalone.example.toml`.
# dir = "/tmp/greptimedb/wal"
file_size = "256MB"
purge_threshold = "4GB"
purge_interval = "10m"
read_batch_size = 128
sync_write = false

# Kafka wal options, see `standalone.example.toml`.
# broker_endpoints = ["127.0.0.1:9092"]
# Warning: Kafka has a default limit of 1MB per message in a topic.
# max_batch_size = "1MB"
# linger = "200ms"
# consumer_wait_timeout = "100ms"
# backoff_init = "500ms"
# backoff_max = "10s"
# backoff_base = 2
# backoff_deadline = "5mins"

# Storage options, see `standalone.example.toml`.
[storage]
# The working home directory.
data_home = "/tmp/greptimedb/"
# Storage type.
type = "File"
# TTL for all tables. Disabled by default.
# global_ttl = "7d"

# Cache configuration for object storage such as 'S3' etc.
# The local file cache directory
# cache_path = "/path/local_cache"
# The local file cache capacity in bytes.
# cache_capacity = "256MB"

# Custom storage options
#[[storage.providers]]
#type = "S3"
#[[storage.providers]]
#type = "Gcs"

# Mito engine options
[[region_engine]]
[region_engine.mito]
# Number of region workers
num_workers = 8
# Request channel size of each worker
worker_channel_size = 128
# Max batch size for a worker to handle requests
worker_request_batch_size = 64
# Number of meta action updated to trigger a new checkpoint for the manifest
manifest_checkpoint_distance = 10
# Whether to compress manifest and checkpoint file by gzip (default false).
compress_manifest = false
# Max number of running background jobs
max_background_jobs = 4
# Interval to auto flush a region if it has not flushed yet.
auto_flush_interval = "1h"
# Global write buffer size for all regions. If not set, it's default to 1/8 of OS memory with a max limitation of 1GB.
global_write_buffer_size = "1GB"
# Global write buffer size threshold to reject write requests. If not set, it's default to 2 times of `global_write_buffer_size`
global_write_buffer_reject_size = "2GB"
# Cache size for SST metadata. Setting it to 0 to disable the cache.
# If not set, it's default to 1/32 of OS memory with a max limitation of 128MB.
sst_meta_cache_size = "128MB"
# Cache size for vectors and arrow arrays. Setting it to 0 to disable the cache.
# If not set, it's default to 1/16 of OS memory with a max limitation of 512MB.
vector_cache_size = "512MB"
# Cache size for pages of SST row groups. Setting it to 0 to disable the cache.
# If not set, it's default to 1/16 of OS memory with a max limitation of 512MB.
page_cache_size = "512MB"
# Buffer size for SST writing.
sst_write_buffer_size = "8MB"
# Parallelism to scan a region (default: 1/4 of cpu cores).
# - 0: using the default value (1/4 of cpu cores).
# - 1: scan in current thread.
# - n: scan in parallelism n.
scan_parallelism = 0
# Capacity of the channel to send data from parallel scan tasks to the main task (default 32).
parallel_scan_channel_size = 32
# Whether to allow stale WAL entries read during replay.
allow_stale_entries = false

[region_engine.mito.inverted_index]
# Whether to create the index on flush.
# - "auto": automatically
# - "disable": never
create_on_flush = "auto"
# Whether to create the index on compaction.
# - "auto": automatically
# - "disable": never
create_on_compaction = "auto"
# Whether to apply the index on query
# - "auto": automatically
# - "disable": never
apply_on_query = "auto"
# Memory threshold for performing an external sort during index creation.
# Setting to empty will disable external sorting, forcing all sorting operations to happen in memory.
mem_threshold_on_create = "64M"
# File system path to store intermediate files for external sorting (default `{data_home}/index_intermediate`).
intermediate_path = ""

[region_engine.mito.memtable]
# Memtable type.
# - "partition_tree": partition tree memtable
# - "time_series": time-series memtable (deprecated)
type = "partition_tree"
# The max number of keys in one shard.
index_max_keys_per_shard = 8192
# The max rows of data inside the actively writing buffer in one shard.
data_freeze_threshold = 32768
# Max dictionary bytes.
fork_dictionary_bytes = "1GiB"

# Log options, see `standalone.example.toml`
# [logging]
# dir = "/tmp/greptimedb/logs"
# level = "info"

# Datanode export the metrics generated by itself
# encoded to Prometheus remote-write format
# and send to Prometheus remote-write compatible receiver (e.g. send to `greptimedb` itself)
# This is only used for `greptimedb` to export its own metrics internally. It's different from prometheus scrape.
# [export_metrics]
# whether enable export metrics, default is false
# enable = false
# The interval of export metrics
# write_interval = "30s"
# [export_metrics.remote_write]
# The url the metrics send to. The url is empty by default, url example: `http://127.0.0.1:4000/v1/prometheus/write?db=information_schema`
# url = ""
# HTTP headers of Prometheus remote-write carry
# headers = {}