Comments (3)
the customized ParquetExec is designed for reading data directly from HDFS via JNI (we don't use object-store or libhdfs because they are too hard to be used in production environemnt).
I don't think datafusion's Reader interface outperforms current ExecutionPlan/SendableRecordBatchStream implementation. and i'm not attracted to datafusion's builtin formats (like csv, json), as they are not widely used in spark.
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yeah, I see. but it is hard to extend data source now, it doesn't have extend interface to support that. we can easy to extend datasource if we use datafusion reader something like deltalake, avro, etc
from blaze.
yeah, I see. but it is hard to extend data source now, it doesn't have extend interface to support that. we can easy to extend datasource if we use datafusion reader something like deltalake, avro, etc
it should be hard. different formats have lots of specialized logics of reading data, like pruning, data type converting, delimiting, and so on. i don't have any idea to design an input format interface yet.
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Related Issues (20)
- 【ERROR】spark job fail due to scala.NotImplementedError: cannot convert partitioning to native HOT 2
- supports writing parquet file with dynamic partitions
- improve SortExec: prune sort keys from sorting record batch
- improve SortExec: use in-memory multiway merge sort
- Improve LoserTree: use static trait to enable comparator inlining
- ClassCastException when have specify UDF HOT 2
- Improve SortShuffleWriter: use in-memory multiway merge sort
- Arrow error: Cast error: Cannot cast from struct to other types HOT 4
- supports native json_tuple()
- get_json_object: use sonic-rs for faster json parsing
- StackOverflowError
- I find blaze has no acceleration effect?why HOT 11
- Does this blaze optimization only support parquet files? HOT 2
- Does this blaze optimization have any requirements for the operating system version, only supporting Centos and Ubuntu? Can other operating systems be used, such as Anolis OS HOT 4
- introduce StringView HOT 1
- I'm sorry, that was my mistake, I wasn't rigorous enough to ask for proof. HOT 4
- ORC file format supporting
- How to close BlazeShuffleManager? HOT 1
- blaze.BlazeConverters: Error converting exec: HashAggregateExec: assertion failed HOT 1
- Why is scala's logInfo unable to output logs? HOT 4
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