Merge branch 'master' of github.com:yandex/ClickHouse

CHANGELOG.md

@@ -1,3 +1,8 @@
+## ClickHouse release 18.14.15, 2018-11-21
+
+### Bug fixes:
+* The size of memory chunk was overestimated while deserializing the column of type `Array(String)` that leads to "Memory limit exceeded" errors. The issue appeared in version 18.12.13. [#3589](https://github.com/yandex/ClickHouse/issues/3589)
+
 ## ClickHouse release 18.14.14, 2018-11-20
 
 ### Bug fixes:

CHANGELOG_RU.md

@@ -1,3 +1,8 @@
+## ClickHouse release 18.14.15, 2018-11-21
+
+### Исправления ошибок:
+* При чтении столбцов типа `Array(String)`, размер требуемого куска памяти оценивался слишком большим, что приводило к исключению "Memory limit exceeded" при выполнении запроса. Ошибка появилась в версии 18.12.13. [#3589](https://github.com/yandex/ClickHouse/issues/3589)
+
 ## ClickHouse release 18.14.14, 2018-11-20
 
 ### Исправления ошибок:

dbms/tests/queries/0_stateless/00753_quantile_format.sql

@@ -1,3 +1,5 @@
+DROP TABLE IF EXISTS test.datetime;
+
 CREATE TABLE test.datetime (d DateTime) ENGINE = Memory;
 INSERT INTO test.datetime(d) VALUES(toDateTime('2016-06-15 23:00:00'));
 
@@ -24,3 +26,5 @@ SELECT quantilesTDigest(0.2)(d) FROM test.datetime;
 
 SELECT quantileTDigestWeighted(0.2)(d, 1) FROM test.datetime;
 SELECT quantilesTDigestWeighted(0.2)(d, 1) FROM test.datetime;
+
+DROP TABLE test.datetime;

docs/en/operations/tips.md

@@ -74,7 +74,7 @@ echo 4096 | sudo tee /sys/block/md2/md/stripe_cache_size
 
 Calculate the exact number from the number of devices and the block size, using the formula: `2 * num_devices * chunk_size_in_bytes / 4096`.
 
-A block size of 1025 KB is sufficient for all RAID configurations.
+A block size of 1024 KB is sufficient for all RAID configurations.
 Never set the block size too small or too large.
 
 You can use RAID-0 on SSD.