org.apache.hadoop.hbase.TableName.<init>()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中org.apache.hadoop.hbase.TableName.<init>()方法的一些代码示例，展示了TableName.<init>()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。TableName.<init>()方法的具体详情如下：
包路径：org.apache.hadoop.hbase.TableName
类名称：TableName
方法名：<init>

TableName.<init>介绍

[英]This is only for the old and meta tables.
[中]这只适用于旧表和元表。

代码示例

代码示例来源：origin: apache/hbase

  1. /**
  2.  * It is used to create table names for old META, and ROOT table.
  3.  * These tables are not really legal tables. They are not added into the cache.
  4.  * @return a dummy TableName instance (with no validation) for the passed qualifier
  5.  */
  6. private static TableName getADummyTableName(String qualifier) {
  7.  return new TableName(qualifier);
  8. }

代码示例来源：origin: apache/hbase

  1. /**
  2.  * Check that the object does not exist already. There are two reasons for creating the objects
  3.  * only once:
  4.  * 1) With 100K regions, the table names take ~20MB.
  5.  * 2) Equals becomes much faster as it's resolved with a reference and an int comparison.
  6.  */
  7. private static TableName createTableNameIfNecessary(ByteBuffer bns, ByteBuffer qns) {
  8.  for (TableName tn : tableCache) {
  9.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  10.    return tn;
  11.   }
  12.  }
  13.  TableName newTable = new TableName(bns, qns);
  14.  if (tableCache.add(newTable)) {  // Adds the specified element if it is not already present
  15.   return newTable;
  16.  }
  17.  // Someone else added it. Let's find it.
  18.  for (TableName tn : tableCache) {
  19.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  20.    return tn;
  21.   }
  22.  }
  23.  // this should never happen.
  24.  throw new IllegalStateException(newTable + " was supposed to be in the cache");
  25. }

代码示例来源：origin: com.aliyun.hbase/alihbase-common

  1. /**
  2.  * It is used to create table names for old META, and ROOT table.
  3.  * These tables are not really legal tables. They are not added into the cache.
  4.  * @return a dummy TableName instance (with no validation) for the passed qualifier
  5.  */
  6. private static TableName getADummyTableName(String qualifier) {
  7.  return new TableName(qualifier);
  8. }

代码示例来源：origin: org.apache.hbase/hbase-common

  1. /**
  2.  * It is used to create table names for old META, and ROOT table.
  3.  * These tables are not really legal tables. They are not added into the cache.
  4.  * @return a dummy TableName instance (with no validation) for the passed qualifier
  5.  */
  6. private static TableName getADummyTableName(String qualifier) {
  7.  return new TableName(qualifier);
  8. }

代码示例来源：origin: harbby/presto-connectors

  1. /**
  2.  * It is used to create table names for old META, and ROOT table.
  3.  * These tables are not really legal tables. They are not added into the cache.
  4.  * @return a dummy TableName instance (with no validation) for the passed qualifier
  5.  */
  6. private static TableName getADummyTableName(String qualifier) {
  7.  return new TableName(qualifier);
  8. }

代码示例来源：origin: stackoverflow.com

  1. TableName papa = new TableName();
  2. papa.setParent(null); // parent
  4.   TableName kid1 = new TableName();
  5.   kid1.setParent(papa);
  6.   papa.getChildren().add(kid1);
  8.     TableName kid1_1 = new TableName();
  9.     kid1_1.setParent(kid1);
  10.     kid1.getChildren().add(kid1_1);
  12.   TableName kid2 = new TableName();
  13.   kid2.setParent(papa);
  14.   papa.getChildren().add(kid2);
  16. session.save(papa)

代码示例来源：origin: harbby/presto-connectors

  1. /**
  2.  * Check that the object does not exist already. There are two reasons for creating the objects
  3.  * only once:
  4.  * 1) With 100K regions, the table names take ~20MB.
  5.  * 2) Equals becomes much faster as it's resolved with a reference and an int comparison.
  6.  */
  7. private static TableName createTableNameIfNecessary(ByteBuffer bns, ByteBuffer qns) {
  8.  for (TableName tn : tableCache) {
  9.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  10.    return tn;
  11.   }
  12.  }
  13.  TableName newTable = new TableName(bns, qns);
  14.  if (tableCache.add(newTable)) {  // Adds the specified element if it is not already present
  15.   return newTable;
  16.  }
  17.  // Someone else added it. Let's find it.
  18.  for (TableName tn : tableCache) {
  19.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  20.    return tn;
  21.   }
  22.  }
  23.  // this should never happen.
  24.  throw new IllegalStateException(newTable + " was supposed to be in the cache");
  25. }

代码示例来源：origin: org.apache.hbase/hbase-common

  1. /**
  2.  * Check that the object does not exist already. There are two reasons for creating the objects
  3.  * only once:
  4.  * 1) With 100K regions, the table names take ~20MB.
  5.  * 2) Equals becomes much faster as it's resolved with a reference and an int comparison.
  6.  */
  7. private static TableName createTableNameIfNecessary(ByteBuffer bns, ByteBuffer qns) {
  8.  for (TableName tn : tableCache) {
  9.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  10.    return tn;
  11.   }
  12.  }
  13.  TableName newTable = new TableName(bns, qns);
  14.  if (tableCache.add(newTable)) {  // Adds the specified element if it is not already present
  15.   return newTable;
  16.  }
  17.  // Someone else added it. Let's find it.
  18.  for (TableName tn : tableCache) {
  19.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  20.    return tn;
  21.   }
  22.  }
  23.  // this should never happen.
  24.  throw new IllegalStateException(newTable + " was supposed to be in the cache");
  25. }

代码示例来源：origin: com.aliyun.hbase/alihbase-common

  1. /**
  2.  * Check that the object does not exist already. There are two reasons for creating the objects
  3.  * only once:
  4.  * 1) With 100K regions, the table names take ~20MB.
  5.  * 2) Equals becomes much faster as it's resolved with a reference and an int comparison.
  6.  */
  7. private static TableName createTableNameIfNecessary(ByteBuffer bns, ByteBuffer qns) {
  8.  for (TableName tn : tableCache) {
  9.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  10.    return tn;
  11.   }
  12.  }
  13.  TableName newTable = new TableName(bns, qns);
  14.  if (tableCache.add(newTable)) {  // Adds the specified element if it is not already present
  15.   return newTable;
  16.  }
  17.  // Someone else added it. Let's find it.
  18.  for (TableName tn : tableCache) {
  19.   if (Bytes.equals(tn.getQualifier(), qns) && Bytes.equals(tn.getNamespace(), bns)) {
  20.    return tn;
  21.   }
  22.  }
  23.  // this should never happen.
  24.  throw new IllegalStateException(newTable + " was supposed to be in the cache");
  25. }

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