[SDENT 180] support for fail fast type casting #1542
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added 3 commits
March 24, 2020 15:23
conversions based on configuration property `snappydata.failFastTypeCasting`.
instead of using generic RuntimeException - Adding tests for more scenarios
kneeraj
approved these changes
Mar 27, 2020
@kneeraj To keep it shorter. Also it depicted the overall behaviour which is opposite of the existing "fail safe" behaviour. I am fine with "fail on cast error" too if "fail fast" sounds confusing. |
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Changes proposed in this pull request
Apache Spark handles type casting failures in a fail safe manner. Instead of
failing the entire query, Spark populates
nullvalues whenever type castingfailure occurs. Snappydata inherits the same behavior from Spark.
With this changes we are exposing a session level configuration to enable fail
fast behaviour for casting errors. i.e. instead of returning
nullvalues forcasting failures, the query will be failed altogether whenever first type cast
error occurs.
The configuration property is
snappydata.failOnCastErrorwhich defaultsto
false. Setting this property true will turn on fail fast casting behaviour.Note that these changes won't be available on smart connector mode as the
changes are done at the Spark layer.
Patch testing
Other PRs
TIBCOSoftware/snappy-spark#201