cyb70289 commented on code in PR #13250:
URL: https://github.com/apache/arrow/pull/13250#discussion_r884840369
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cpp/src/arrow/io/buffered.cc:
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@@ -144,6 +144,8 @@ class BufferedOutputStream::Impl : public BufferedBase {
RETURN_NOT_OK(FlushUnlocked());
DCHECK_EQ(buffer_pos_, 0);
if (nbytes >= buffer_size_) {
+ // Invalidate cached raw pos
+ raw_pos_ = -1;
Review Comment:
A bit complicated as `raw_->Write(buffer)` may error, and don't know exactly
how many bytes are written?
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