wonderfulxin opened a new issue, #32040:
URL: https://github.com/apache/shardingsphere/issues/32040
SchemaMetaData load very slow
i use shardingjdbc 5.3.2
'''
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-jdbc-core</artifactId>
<version>5.3.2</version>
</dependency>
'''
but when i load SchemaMetaData ,it is very slow,i don't know why?just
because my data is too big??
each.get() is very very very slow!!! how to solve it? thinks!!
'''
public static Map<String, SchemaMetaData> load(final
Collection<SchemaMetaDataLoaderMaterial> materials) throws SQLException {
Map<String, SchemaMetaData> result = new
LinkedHashMap<>(materials.size(), 1);
Collection<Future<Collection<SchemaMetaData>>> futures = new
LinkedList<>();
for (SchemaMetaDataLoaderMaterial each : materials) {
futures.add(EXECUTOR_SERVICE.submit(() -> load(each)));
}
try {
for (Future<Collection<SchemaMetaData>> each : futures) {
mergeSchemaMetaDataMap(result, each.get());
}
} catch (final InterruptedException | ExecutionException ex) {
if (ex.getCause() instanceof SQLException) {
throw (SQLException) ex.getCause();
}
throw new UnknownSQLException(ex).toSQLException();
}
return result;
}
'''
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