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Code Issues Releases Wiki Activity

Expose a flag to enable the MDB_WRITEMAP flag

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This commit is contained in:
Kerollmops 2023-05-15 11:23:58 +02:00
parent c4a40e7110
commit f759ec7fad
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GPG key ID: 92ADA4E935E71FA4
8 changed files with 80 additions and 10 deletions
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3
meilisearch/src/analytics/segment_analytics.rs
View file

@ -225,6 +225,7 @@ impl super::Analytics for SegmentAnalytics {
struct Infos {
env: String,
experimental_enable_metrics: bool,
experimental_reduce_indexing_memory_usage: bool,
db_path: bool,
import_dump: bool,
dump_dir: bool,
@ -258,6 +259,7 @@ impl From<Opt> for Infos {
let Opt {
db_path,
experimental_enable_metrics,
experimental_reduce_indexing_memory_usage,
http_addr,
master_key: _,
env,
@ -300,6 +302,7 @@ impl From<Opt> for Infos {
Self {
env,
experimental_enable_metrics,
experimental_reduce_indexing_memory_usage,
db_path: db_path != PathBuf::from("./data.ms"),
import_dump: import_dump.is_some(),
dump_dir: dump_dir != PathBuf::from("dumps/"),

1
meilisearch/src/lib.rs
View file

@ -232,6 +232,7 @@ fn open_or_create_database_unchecked(
dumps_path: opt.dump_dir.clone(),
task_db_size: opt.max_task_db_size.get_bytes() as usize,
index_base_map_size: opt.max_index_size.get_bytes() as usize,
enable_mdb_writemap: opt.experimental_reduce_indexing_memory_usage,
indexer_config: (&opt.indexer_options).try_into()?,
autobatching_enabled: true,
max_number_of_tasks: 1_000_000,

5
meilisearch/src/main.rs
View file

@ -29,6 +29,11 @@ fn setup(opt: &Opt) -> anyhow::Result<()> {
async fn main() -> anyhow::Result<()> {
let (opt, config_read_from) = Opt::try_build()?;
anyhow::ensure!(
!(cfg!(windows) && opt.experimental_reduce_indexing_memory_usage),
"The `experimental-reduce-indexing-memory-usage` flag is not supported on Windows"
);
setup(&opt)?;
match (opt.env.as_ref(), &opt.master_key) {

21
meilisearch/src/option.rs
View file

@ -48,6 +48,8 @@ const MEILI_IGNORE_DUMP_IF_DB_EXISTS: &str = "MEILI_IGNORE_DUMP_IF_DB_EXISTS";
const MEILI_DUMP_DIR: &str = "MEILI_DUMP_DIR";
const MEILI_LOG_LEVEL: &str = "MEILI_LOG_LEVEL";
const MEILI_EXPERIMENTAL_ENABLE_METRICS: &str = "MEILI_EXPERIMENTAL_ENABLE_METRICS";
const MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE: &str =
"MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE";
const DEFAULT_CONFIG_FILE_PATH: &str = "./config.toml";
const DEFAULT_DB_PATH: &str = "./data.ms";
@ -293,6 +295,20 @@ pub struct Opt {
#[serde(default)]
pub experimental_enable_metrics: bool,
/// Experimentally reduces the amount of RAM used by the engine when indexing documents.
///
/// You must not use this flag in production. It is experimental and can corrupt the database
/// or be removed in future versions. It can also be stabilized or directly integrated
/// into the engine later.
///
/// This flag enables the MDB_WRITEMAP option of LMDB, making the internal key-value store
/// use much less RAM than usual. Unfortunately, it can reduce the write speed of it and therefore
/// slow down the engine. You can read more and tell us about your experience on the dedicated
/// discussion: <https://github.com/meilisearch/product/discussions/652>.
#[clap(long, env = MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE)]
#[serde(default)]
pub experimental_reduce_indexing_memory_usage: bool,
#[serde(flatten)]
#[clap(flatten)]
pub indexer_options: IndexerOpts,
@ -385,6 +401,7 @@ impl Opt {
#[cfg(all(not(debug_assertions), feature = "analytics"))]
no_analytics,
experimental_enable_metrics: enable_metrics_route,
experimental_reduce_indexing_memory_usage: reduce_indexing_memory_usage,
} = self;
export_to_env_if_not_present(MEILI_DB_PATH, db_path);
export_to_env_if_not_present(MEILI_HTTP_ADDR, http_addr);
@ -426,6 +443,10 @@ impl Opt {
MEILI_EXPERIMENTAL_ENABLE_METRICS,
enable_metrics_route.to_string(),
);
export_to_env_if_not_present(
MEILI_EXPERIMENTAL_REDUCE_INDEXING_MEMORY_USAGE,
reduce_indexing_memory_usage.to_string(),
);
indexer_options.export_to_env();
}