hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

[BUG.FIX] add comment for code

Browse Source
This commit is contained in:
Tyshawn
2023-09-12 07:10:59 +00:00
committed by ob-robot
parent b170b18043
commit abd80cd73c
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/storage/blocksstable/ob_tmp_file_cache.cpp
View File

@ -1539,6 +1539,11 @@ int ObTmpTenantMemBlockManager::change_mem()
if (!tenant_config.is_valid()) { if (!tenant_config.is_valid()) {
COMMON_LOG(INFO, "failed to get tenant config", K_(tenant_id)); COMMON_LOG(INFO, "failed to get tenant config", K_(tenant_id));
} else { } else {
// Here, this memory is used to store temporary file block metadata, which is related to the
// datafile size. So, we set the upper limit of memory to be 70% of tenant memory to
// avoid excessive tenant memory, and affecting system stability. In theory, the limit
// will be reached only when the tenant's memory is extremely small and the disk is extremely
// large.
if (0 == tenant_config->_temporary_file_io_area_size) { if (0 == tenant_config->_temporary_file_io_area_size) {
mem_limit = 2 * (2 << 20); mem_limit = 2 * (2 << 20);
} else { } else {