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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/07/17 17:02:25 UTC

[GitHub] [arrow] jacques-n commented on issue #7786: Fail to set Java VarCharVector

jacques-n commented on issue #7786:
URL: https://github.com/apache/arrow/issues/7786#issuecomment-660226237


   I think you have a misunderstanding of the expected use pattern of Arrow vectors. Variable-width vectors need to be populated in order. They are randomly-readable once populated but they are not randomly-writable. 
   
   For reference, at Dremio we did build a Arrow-vector like structure for doing what you want. You can see the code here: https://github.com/dremio/dremio-oss/blob/master/sabot/kernel/src/main/java/org/apache/arrow/vector/MutableVarcharVector.java


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