From 88e69f4302dc144b7338902da61d429842248a89 Mon Sep 17 00:00:00 2001
From: arriven <20084245+Arriven@users.noreply.github.com>
Date: Sun, 2 Oct 2022 17:53:08 +0300
Subject: [PATCH] Increase max concurrent readers on indexes

---
 meilisearch-lib/src/index/dump.rs  | 1 +
 meilisearch-lib/src/index/index.rs | 1 +
 meilisearch-lib/src/snapshot.rs    | 1 +
 3 files changed, 3 insertions(+)

diff --git a/meilisearch-lib/src/index/dump.rs b/meilisearch-lib/src/index/dump.rs
index 6a41fa7a0..9cc3c033f 100644
--- a/meilisearch-lib/src/index/dump.rs
+++ b/meilisearch-lib/src/index/dump.rs
@@ -105,6 +105,7 @@ impl Index {
 
         let mut options = EnvOpenOptions::new();
         options.map_size(size);
+        options.max_readers(1024);
         let index = milli::Index::new(options, &dst_dir_path)?;
 
         let mut txn = index.write_txn()?;
diff --git a/meilisearch-lib/src/index/index.rs b/meilisearch-lib/src/index/index.rs
index 02425d0bf..3d6c47949 100644
--- a/meilisearch-lib/src/index/index.rs
+++ b/meilisearch-lib/src/index/index.rs
@@ -94,6 +94,7 @@ impl Index {
         create_dir_all(&path)?;
         let mut options = EnvOpenOptions::new();
         options.map_size(size);
+        options.max_readers(1024);
         let inner = Arc::new(milli::Index::new(options, &path)?);
         Ok(Index {
             inner,
diff --git a/meilisearch-lib/src/snapshot.rs b/meilisearch-lib/src/snapshot.rs
index da4907939..4566a627e 100644
--- a/meilisearch-lib/src/snapshot.rs
+++ b/meilisearch-lib/src/snapshot.rs
@@ -181,6 +181,7 @@ impl SnapshotJob {
 
             let mut options = milli::heed::EnvOpenOptions::new();
             options.map_size(self.index_size);
+            options.max_readers(1024);
             let index = milli::Index::new(options, entry.path())?;
             index.copy_to_path(dst, CompactionOption::Enabled)?;
         }