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Yi Liu commented on HADOOP-11938: --------------------------------- Thanks Kai for the catch. > Fix ByteBuffer version encode/decode API of raw erasure coder > ------------------------------------------------------------- > > Key: HADOOP-11938 > URL: https://issues.apache.org/jira/browse/HADOOP-11938 > Project: Hadoop Common > Issue Type: Sub-task > Components: io > Reporter: Kai Zheng > Assignee: Kai Zheng > > While investigating a test failure in {{TestRecoverStripedFile}}, one issue > in raw erasrue coder, a bad optimization in below codes. It assumes the heap > buffer backed by the bytes array available for reading or writing always > starts with zero and takes the whole. > {code} > protected static byte[][] toArrays(ByteBuffer[] buffers) { > byte[][] bytesArr = new byte[buffers.length][]; > ByteBuffer buffer; > for (int i = 0; i < buffers.length; i++) { > buffer = buffers[i]; > if (buffer == null) { > bytesArr[i] = null; > continue; > } > if (buffer.hasArray()) { > bytesArr[i] = buffer.array(); > } else { > throw new IllegalArgumentException("Invalid ByteBuffer passed, " + > "expecting heap buffer"); > } > } > return bytesArr; > } > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)