From 8904e7a38060bd287b41a8cd64a9b041f6dab3c1 Mon Sep 17 00:00:00 2001
From: akatsyuba <akatsyuba@telenordigital.com>
Date: Fri, 16 Aug 2019 14:33:29 +0200
Subject: [PATCH] Merge tree configuration

---
 README.md           |  7 +++++++
 defaults/main.yml   |  2 ++
 templates/config.j2 | 12 +++++++-----
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 6785301..e054c5f 100644
--- a/README.md
+++ b/README.md
@@ -154,6 +154,13 @@ clickhouse_kafka_topics_config:
     fetch_min_bytes: 120000
 ```
 
+F: You can manage Merge Tree config. For the list of available parameters, see [MergeTreeSettings.h](https://github.com/yandex/ClickHouse/blob/master/dbms/src/Storages/MergeTree/MergeTreeSettings.h).
+```yaml
+clickhouse_merge_tree_config:
+  max_suspicious_broken_parts: 5
+  parts_to_throw_insert: 600
+```
+
 Example Playbook
 ----------------
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 59a3773..6ad3bc0 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -93,3 +93,5 @@ max_partitions_per_insert_block: 100
 clickhouse_kafka_config: []
 
 clickhouse_kafka_topics_config: []
+
+clickhouse_merge_tree_config: []
diff --git a/templates/config.j2 b/templates/config.j2
index b454da8..9911c4e 100644
--- a/templates/config.j2
+++ b/templates/config.j2
@@ -306,11 +306,13 @@
     </distributed_ddl>
 
     <!-- Settings to fine tune MergeTree tables. See documentation in source code, in MergeTreeSettings.h -->
-    <!--
-    <merge_tree>
-        <max_suspicious_broken_parts>5</max_suspicious_broken_parts>
-    </merge_tree>
-    -->
+    {% if clickhouse_merge_tree_config is defined %}
+        <merge_tree>
+            {% for config in clickhouse_merge_tree_config %}
+                <{{ config }}>{{ clickhouse_merge_tree_config[config] }}</{{ config }}>
+            {% endfor %}
+        </merge_tree>
+    {% endif %}
 
     <!-- Protection from accidental DROP.
          If size of a MergeTree table is greater than max_table_size_to_drop (in bytes) than table could not be dropped with any DROP query.