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Using DataBuffer::write results in IndexOutOfBoundsException [SPR-16365] #20912

spring-issuemaster opened this issue Jan 11, 2018 · 1 comment


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commented Jan 11, 2018

Arjen Poutsma opened SPR-16365 and commented

Using DataBuffer.write(DataBuffer[] databuffer) in a Flux.reduce aggregation result in a IndexOutOfBoundsException when running on Netty. The reason for this is that the initial buffer does not have enough capacity to contain the data of all subsequent buffers.

Issue Links:

  • #20898 Use of CompositeByteBuf in NettyDataBuffer results in IllegalReferenceCountException

Referenced from: commits 0befc60, e39bf87, 67e7c78, 384a399


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commented Jan 12, 2018

Arjen Poutsma commented

Fixed in 384a399 and 67e7c78.

Fixed by introducing Mono<DataBuffer> compose(Publisher<DataBuffer>). For Netty, this uses a CompositeByteBuf to compose the given data buffers into one. For the DefaultDataBuffer, this writes all data into one buffer.

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