org.apache.hadoop.io.IOUtils.writeFully()方法的使用及代码示例

x33g5p2x  于2022-01-20 转载在 其他  
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本文整理了Java中org.apache.hadoop.io.IOUtils.writeFully()方法的一些代码示例,展示了IOUtils.writeFully()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。IOUtils.writeFully()方法的具体详情如下:
包路径:org.apache.hadoop.io.IOUtils
类名称:IOUtils
方法名:writeFully

IOUtils.writeFully介绍

[英]Write a ByteBuffer to a FileChannel at a given offset, handling short writes.
[中]以给定偏移量将ByteBuffer写入文件通道,处理短写操作。

代码示例

代码示例来源:origin: org.apache.hadoop/hadoop-hdfs

public void set(long newVal) throws IOException {
 lazyOpen();
 buf.clear();
 buf.putLong(newVal);
 buf.flip();
 IOUtils.writeFully(ch, buf, 0);
 value = newVal;
}

代码示例来源:origin: org.apache.hadoop/hadoop-hdfs

private void preallocate() throws IOException {
 long position = fc.position();
 long size = fc.size();
 int bufSize = doubleBuf.getReadyBuf().getLength();
 long need = bufSize - (size - position);
 if (need <= 0) {
  return;
 }
 long oldSize = size;
 long total = 0;
 long fillCapacity = fill.capacity();
 while (need > 0) {
  fill.position(0);
  IOUtils.writeFully(fc, fill, size);
  need -= fillCapacity;
  size += fillCapacity;
  total += fillCapacity;
 }
 if(LOG.isDebugEnabled()) {
  LOG.debug("Preallocated " + total + " bytes at the end of " +
      "the edit log (offset " + oldSize + ")");
 }
}

代码示例来源:origin: ch.cern.hadoop/hadoop-hdfs

public void set(long newVal) throws IOException {
 lazyOpen();
 buf.clear();
 buf.putLong(newVal);
 buf.flip();
 IOUtils.writeFully(ch, buf, 0);
 value = newVal;
}

代码示例来源:origin: io.prestosql.hadoop/hadoop-apache

public void set(long newVal) throws IOException {
 lazyOpen();
 buf.clear();
 buf.putLong(newVal);
 buf.flip();
 IOUtils.writeFully(ch, buf, 0);
 value = newVal;
}

代码示例来源:origin: ch.cern.hadoop/hadoop-hdfs

private void preallocate() throws IOException {
 long position = fc.position();
 long size = fc.size();
 int bufSize = doubleBuf.getReadyBuf().getLength();
 long need = bufSize - (size - position);
 if (need <= 0) {
  return;
 }
 long oldSize = size;
 long total = 0;
 long fillCapacity = fill.capacity();
 while (need > 0) {
  fill.position(0);
  IOUtils.writeFully(fc, fill, size);
  need -= fillCapacity;
  size += fillCapacity;
  total += fillCapacity;
 }
 if(LOG.isDebugEnabled()) {
  LOG.debug("Preallocated " + total + " bytes at the end of " +
      "the edit log (offset " + oldSize + ")");
 }
}

代码示例来源:origin: io.prestosql.hadoop/hadoop-apache

private void preallocate() throws IOException {
 long position = fc.position();
 long size = fc.size();
 int bufSize = doubleBuf.getReadyBuf().getLength();
 long need = bufSize - (size - position);
 if (need <= 0) {
  return;
 }
 long oldSize = size;
 long total = 0;
 long fillCapacity = fill.capacity();
 while (need > 0) {
  fill.position(0);
  IOUtils.writeFully(fc, fill, size);
  need -= fillCapacity;
  size += fillCapacity;
  total += fillCapacity;
 }
 if(LOG.isDebugEnabled()) {
  LOG.debug("Preallocated " + total + " bytes at the end of " +
      "the edit log (offset " + oldSize + ")");
 }
}

代码示例来源:origin: com.github.jiayuhan-it/hadoop-common

FileChannel fc = raf.getChannel();
ByteBuffer buf = ByteBuffer.wrap(input);
IOUtils.writeFully(fc, buf);
raf.seek(0);
raf.read(output);
IOUtils.writeFully(fc, buf, HALFWAY);
for (int i = 0; i < HALFWAY; i++) {
 assertEquals(input[i], output[i]);

代码示例来源:origin: ch.cern.hadoop/hadoop-common

FileChannel fc = raf.getChannel();
ByteBuffer buf = ByteBuffer.wrap(input);
IOUtils.writeFully(fc, buf);
raf.seek(0);
raf.read(output);
IOUtils.writeFully(fc, buf, HALFWAY);
for (int i = 0; i < HALFWAY; i++) {
 assertEquals(input[i], output[i]);

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