Apache Doris Weekly Troubleshooting Digest: SQL, DDL, and Cluster Operations
SQL Execution
Error E-3113 on long string columns in 2.1.x
Symptom
SELECT statements fail with [E-3113] string column length after upgrading to 2.1.0 or 2.1.1.
Fix
Raise the session variable parallel_pipeline_task_num. On a 32-core / 256 GB node:
SET parallel_pipeline_task_num = 16; -- or 32
JDBC catalog connection exhaustion
Symptom
Can not ...
Posted on Sun, 31 May 2026 00:16:23 +0000 by tmharrison
Apache Doris Integration Troubleshooting and Performance Tuning
External Catalog Connectivity and Driver Compatibility
When querying an Elasticsearch catalog, connection timeouts may occur if the network topology prevents direct access to data nodes. If the error log indicates a failure to connect to the ES server after a specific duration, verify the network path between Backend nodes and the Elasticsearch ...
Posted on Fri, 08 May 2026 13:56:20 +0000 by ict