TIL: Fixing “Cannot Find onconfig File” in GBase Database
Today I helped troubleshoot a GBase Database(GBase 8s) instance that failed to start. The error looked like a missing configuration file, but the re…
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Fixing "Can't get distribution attribute of table" in GBase 8a
When a gbase database cluster experiences an unclean shutdown — a sudden power loss or kernel panic — some metadata that was still in memory may nev…
GBase 8a 9.5.3 New Feature: Event‑Based Data Node Replacement (eventMode)
Starting from certain builds of GBase 8a 9.5.3, a new event‑driven method for replacing failed data nodes is available. Unlike the traditional redis…
GBase 8a Performance Anomaly Case Study: How a Single Parameter Change Sparked a Chain Reaction
One seemingly innocent parameter adjustment — increasing group_concat_max_len to accommodate a business requirement — caused a cascade of performanc…
GBase 8a Operations in Practice: Load Monitoring, Audit Logs, and Memory Tuning
This guide covers three core areas of daily GBase 8a operations: tracking data loads and collecting error details, configuring audit logs and analys…
What Drags Down Throughput in GBase 8a Bulk Loading — and Where to Look First
When loading large volumes into a gbase database cluster, stability matters far more than a single peak throughput number. The same 500 GB data set…
GBase 8c Distributed Cluster Operations: Troubleshooting Common Failures with Hands‑On Fixes
Node crashes, connection storms, shard anomalies, and resource overloads are the most frequent disruptions in a gbase database cluster. This guide d…
GBase 8a Data Migration: Standardizing Export, Load, and Verification
When moving data between GBase 8a clusters, stability trumps speed. Failures often stem not from the commands themselves but from inconsistent forma…
GBase 8a Slow SQL Diagnosis: 6 Real‑World Cases from Symptom to Fix
Six real slow‑query scenarios with complete trace: data skew, wrong execution plans, oversized intermediate results, and functions that disable part…
Debugging Slow SQL in GBase 8a: How Execution Plans, Distribution Keys, and Parallelism Go Off the Rails Together
A slow query in a gbase database MPP cluster is rarely just a matter of sloppy SQL. More often, it's the combined effect of data distribution, execu…
When GBase 8a Execution Plans Go Wrong: Mastering Statistics Management
A simple SQL suddenly triggers a full table scan, or a JOIN order looks completely off. Most of the time, the culprit is stale statistics misleading…
How GBase 8a Resource Plans Bind to Time Schedules
Resource plans in GBase 8a (e.g., plan_day , plan_night ) are not directly bound to time and do not support cron expressions . Their automated switc…
Why a Failed Rebalance Returns to STARTING Instead of CANCELED in GBase 8a
When a rebalance operation fails on a table that is in RUNNING state, GBase 8a moves the table back to STARTING — not to CANCELED . This behavior re…
Expanding a GBase 8a Cluster: Adding a GNode in Practice
As data grows, you'll likely need to add nodes to your existing GBase 8a MPP cluster without downtime. This hands‑on guide walks through the full pr…
End-to-End: Hadoop Deployment and Data Loading into GBase 8a
This post walks through setting up a distributed Hadoop cluster from scratch and loading data from HDFS into GBase 8a, GBASE's China-domestically de…
GBase 8c High Availability with VIP: A Step-by-Step Verification Guide
This walkthrough demonstrates how to deploy a GBase 8c primary‑standby cluster with a virtual IP (VIP) and verify automatic failover. GBase 8c is a…