MapReduce服务 MRS-追加HDFS文件内容:代码样例
时间:2025-02-12 14:58:43
代码样例
如下是代码片段,详细代码请参考com.huawei.bigdata.hdfs.examples中的HdfsMain类和HdfsWriter类。
/** * 追加文件内容 * * @throws IOException */private void append() throws Exception { final String content = "I append this content."; InputStream in = (InputStream) new ByteArrayInputStream( content.getBytes()); try { HdfsWriter writer = new HdfsWriter(fSystem, DEST_PATH + File.separator + FILE_NAME); writer.doAppend(in); System.out.println("success to append."); } finally {//务必要关闭流资源. close(in); }}
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