thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-22 15:42:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Correct calculation of avg_value_size_hint #3589

Browse Source
This commit is contained in:
Alexey Milovidov 2018-11-21 06:18:42 +03:00
parent 31561ef25a
commit 7e6d9ed82b
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
dbms/src/DataTypes/DataTypeArray.cpp
View File

@ -260,8 +260,8 @@ void DataTypeArray::deserializeBinaryBulkWithMultipleStreams(
throw Exception("Nested column is longer than last offset", ErrorCodes::LOGICAL_ERROR);
size_t nested_limit = last_offset - nested_column.size();
/// We cannot use size hint for arrays to read their elements.
settings.avg_value_size_hint = 0;
/// Adjust value size hint. Divide it to the average array size.
settings.avg_value_size_hint = nested_limit ? settings.avg_value_size_hint / nested_limit * offset_values.size() : 0;
nested->deserializeBinaryBulkWithMultipleStreams(nested_column, nested_limit, settings, state);
settings.path.pop_back();