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SemanticException Generate Map Join Task Error: Cannot serialize object

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Makoto YUI edited this page Jul 2, 2014 · 4 revisions

From Hive 0.11.0, hive.auto.convert.join is enabled by the default.

When using complex queries using views, the auto conversion sometimes throws SemanticException, cannot serialize object.

Workaround for the exception is to disable hive.auto.convert.join before the execution as follows.

set hive.auto.convert.join=false;