Sean Mackrory created HADOOP-15688:
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Summary: ABFS: InputStream wrapped in FSDataInputStream
Key: HADOOP-15688
URL: https://issues.apache.org/jira/browse/HADOOP-15688
Project: Hadoop Common
Issue Type: Sub-task
Reporter: Sean Mackrory
Assignee: Sean Mackrory
I can't read Parquet files from ABFS. It has 2 different implementations to
read seekable streams, and it'll use the one that uses ByteBuffer reads if it
can. It currently decides to use the ByteBuffer read implementation because the
FSDataInputStream it gets back wraps another FSDataInputStream, which
implements ByteBufferReadable.
That's not the most robust way to check that ByteBufferReads are supported by
the ultimately underlying InputStream, but it's unnecessary and probably a
mistake to double-wrap the InputStream, so let's not.
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