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How Do I Do If the Spark Job Error "UnknownScannerExeception" Is Reported?
Updated on 2022-12-12 GMT+08:00
How Do I Do If the Spark Job Error "UnknownScannerExeception" Is Reported?
Symptom
Spark jobs run slowly. Warning information is printed in run logs, and the error cause is UnknownScannerExeception.
Solution
Before running a Spark job, adjust the value of hbase.client.scanner.timeout.period (for example, from 60 seconds to 120 seconds).
Log in to FusionInsight Manager and choose Cluster > Services > HBase. Click Configurations then All Configurations, search for hbase.client.scanner.timeout.period, and change its value to 120000 (unit: ms).
Parent topic: Job Development
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