本文整理了Java中org.apache.hadoop.hive.ql.io.orc.Reader.getMetadataKeys方法的一些代码示例，展示了Reader.getMetadataKeys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。Reader.getMetadataKeys方法的具体详情如下：
包路径：org.apache.hadoop.hive.ql.io.orc.Reader
类名称：Reader
方法名：getMetadataKeys

Reader.getMetadataKeys介绍

[英]Get the user metadata keys.
[中]获取用户元数据密钥。

代码示例

代码示例来源：origin: apache/hive

for (String metadataKey : reader.getMetadataKeys()) {
 if (!metadataKey.equals(OrcRecordUpdater.ACID_KEY_INDEX_NAME)) {
  writer.addUserMetadata(metadataKey, reader.getMetadataValue(metadataKey));

代码示例来源：origin: apache/hive

@Test
public void emptyFile() throws Exception {
 ObjectInspector inspector;
 synchronized (TestOrcFile.class) {
  inspector = ObjectInspectorFactory.getReflectionObjectInspector
    (BigRow.class, ObjectInspectorFactory.ObjectInspectorOptions.JAVA);
 }
 Writer writer = OrcFile.createWriter(testFilePath,
                    OrcFile.writerOptions(conf)
                    .inspector(inspector)
                    .stripeSize(1000)
                    .compress(CompressionKind.NONE)
                    .bufferSize(100));
 writer.close();
 Reader reader = OrcFile.createReader(testFilePath,
   OrcFile.readerOptions(conf).filesystem(fs));
 assertEquals(false, reader.rows().hasNext());
 assertEquals(CompressionKind.NONE, reader.getCompression());
 assertEquals(0, reader.getNumberOfRows());
 assertEquals(0, reader.getCompressionSize());
 assertEquals(false, reader.getMetadataKeys().iterator().hasNext());
 assertEquals(3, reader.getContentLength());
 assertEquals(false, reader.getStripes().iterator().hasNext());
}

代码示例来源：origin: apache/hive

for(String key: reader.getMetadataKeys()) {
 if ("my.meta".equals(key) ||
   "clobber".equals(key) ||

代码示例来源：origin: apache/hive

assertEquals(true, Arrays.equals(expected, included));
assertEquals(false, reader.getMetadataKeys().iterator().hasNext());
assertEquals(5077, reader.getNumberOfRows());
DecimalColumnStatistics stats =