/// <summary>Constructor</summary>
/// <param name="cacheName">name to identify the cache by</param>
/// <param name="percentage">percentage of total java heap space used by this cache</param>
/// <param name="expirationTime">time for an entry to expire in nanoseconds</param>
public RetryCache(string cacheName, double percentage, long expirationTime)
{
int capacity = LightWeightGSet.ComputeCapacity(percentage, cacheName);
capacity = capacity > 16 ? capacity : 16;
this.set = new LightWeightCache <RetryCache.CacheEntry, RetryCache.CacheEntry>(capacity
, capacity, expirationTime, 0);
this.expirationTime = expirationTime;
this.cacheName = cacheName;
this.retryCacheMetrics = RetryCacheMetrics.Create(this);
}
public virtual void Setup()
{
conf = new HdfsConfiguration();
conf.SetBoolean(DFSConfigKeys.DfsNamenodeEnableRetryCacheKey, true);
conf.SetInt(DFSConfigKeys.DfsClientTestDropNamenodeResponseNumKey, 2);
cluster = new MiniDFSCluster.Builder(conf).NnTopology(MiniDFSNNTopology.SimpleHATopology
()).NumDataNodes(3).Build();
cluster.WaitActive();
cluster.TransitionToActive(namenodeId);
HATestUtil.SetFailoverConfigurations(cluster, conf);
filesystem = (DistributedFileSystem)HATestUtil.ConfigureFailoverFs(cluster, conf);
namesystem = cluster.GetNamesystem(namenodeId);
metrics = namesystem.GetRetryCache().GetMetricsForTests();
}
public virtual void TestNames()
{
RetryCache cache = Org.Mockito.Mockito.Mock <RetryCache>();
Org.Mockito.Mockito.When(cache.GetCacheName()).ThenReturn(cacheName);
RetryCacheMetrics metrics = RetryCacheMetrics.Create(cache);
metrics.IncrCacheHit();
metrics.IncrCacheCleared();
metrics.IncrCacheCleared();
metrics.IncrCacheUpdated();
metrics.IncrCacheUpdated();
metrics.IncrCacheUpdated();
CheckMetrics(1, 2, 3);
}
