Examples of org.apache.hadoop.net.CachedDNSToSwitchMapping

org.apache.hadoop.net.CachedDNSToSwitchMapping
A cached implementation of DNSToSwitchMapping that takes an raw DNSToSwitchMapping and stores the resolved network location in a cache. The following calls to a resolved network location will get its location from the cache.

      // Wrap around the configured class with the Cached implementation so as
      // to save on repetitive lookups.
      // Check if the impl is already caching, to avoid double caching.
      dnsToSwitchMapping =
          ((newInstance instanceof CachedDNSToSwitchMapping) ? newInstance
              : new CachedDNSToSwitchMapping(newInstance));
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

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      // Wrap around the configured class with the Cached implementation so as
      // to save on repetitive lookups.
      // Check if the impl is already caching, to avoid double caching.
      dnsToSwitchMapping =
          ((newInstance instanceof CachedDNSToSwitchMapping) ? newInstance
              : new CachedDNSToSwitchMapping(newInstance));
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

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      // Wrap around the configured class with the Cached implementation so as
      // to save on repetitive lookups.
      // Check if the impl is already caching, to avoid double caching.
      dnsToSwitchMapping =
          ((newInstance instanceof CachedDNSToSwitchMapping) ? newInstance
              : new CachedDNSToSwitchMapping(newInstance));
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

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      // Wrap around the configured class with the Cached implementation so as
      // to save on repetitive lookups.
      // Check if the impl is already caching, to avoid double caching.
      dnsToSwitchMapping =
          ((newInstance instanceof CachedDNSToSwitchMapping) ? newInstance
              : new CachedDNSToSwitchMapping(newInstance));
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

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