wuwen5 commented on code in PR #20197:
URL: https://github.com/apache/shardingsphere/pull/20197#discussion_r946451301
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shardingsphere-jdbc/shardingsphere-jdbc-core/src/main/java/org/apache/shardingsphere/driver/jdbc/core/driver/DriverDataSourceCache.java:
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@@ -44,23 +43,17 @@ public DataSource get(final String url) throws SQLException
{
if (dataSourceMap.containsKey(url)) {
return dataSourceMap.get(url);
}
- DataSource dataSource;
+ return dataSourceMap.computeIfAbsent(url,
DriverDataSourceCache::createDataSource);
Review Comment:
Yep, this problem is that when the key present，Therefore, keeping the above
code can avoid this problem。
```
if (dataSourceMap.containsKey(url)) {
return dataSourceMap.get(url);
}
```
Similar solutions
https://github.com/mybatis/mybatis-3/pull/1934/commits/beee143f72b0c396591aa0c59739a1e64fd41867
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