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dbms: ALTER: writing to log just before waiting for lock [#METR-2944].

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Alexey Milovidov 2015-03-27 02:48:50 +03:00
parent bf4bd07065
commit 75dc9db388
1 changed files with 2 additions and 0 deletions
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2
dbms/src/Storages/StorageReplicatedMergeTree.cpp
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@ -1467,6 +1467,8 @@ void StorageReplicatedMergeTree::alterThread()
/// Если описание столбцов изменилось, обновим структуру таблицы локально.
if (changed_version)
{
LOG_INFO(log, "Changed version of 'columns' node in ZooKeeper. Waiting for structure write lock.");
auto table_lock = lockStructureForAlter();
const auto columns_changed = columns != data.getColumnsListNonMaterialized();