Help Center/ MapReduce Service/ Component Operation Guide (LTS)/ Using Hudi/ Common Issues About Hudi/ Data Collection/ HoodieKeyException Is Reported When Data Is Collected
Updated on 2022-11-18 GMT+08:00
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HoodieKeyException Is Reported When Data Is Collected

Question

Is it possible to use a nullable field that contains null records as a primary key when creating a Hudi table?

Answer

No. HoodieKeyException will be thrown.

Caused by: org.apache.hudi.exception.HoodieKeyException: recordKey value: "null" for field: "name" cannot be null or empty.
at org.apache.hudi.keygen.SimpleKeyGenerator.getKey(SimpleKeyGenerator.java:58)
at org.apache.hudi.HoodieSparkSqlWriter$$anonfun$1.apply(HoodieSparkSqlWriter.scala:104)
at org.apache.hudi.HoodieSparkSqlWriter$$anonfun$1.apply(HoodieSparkSqlWriter.scala:100)
Parent topic: Data Collection