public virtual void TestRetryCacheRebuild()
{
DFSTestUtil.RunOperations(cluster, filesystem, conf, BlockSize, 0);
FSNamesystem namesystem = cluster.GetNamesystem();
LightWeightCache <RetryCache.CacheEntry, RetryCache.CacheEntry> cacheSet = (LightWeightCache
<RetryCache.CacheEntry, RetryCache.CacheEntry>)namesystem.GetRetryCache().GetCacheSet
();
NUnit.Framework.Assert.AreEqual(25, cacheSet.Size());
IDictionary <RetryCache.CacheEntry, RetryCache.CacheEntry> oldEntries = new Dictionary
<RetryCache.CacheEntry, RetryCache.CacheEntry>();
IEnumerator <RetryCache.CacheEntry> iter = cacheSet.GetEnumerator();
while (iter.HasNext())
{
RetryCache.CacheEntry entry = iter.Next();
oldEntries[entry] = entry;
}
// restart NameNode
cluster.RestartNameNode();
cluster.WaitActive();
namesystem = cluster.GetNamesystem();
// check retry cache
NUnit.Framework.Assert.IsTrue(namesystem.HasRetryCache());
cacheSet = (LightWeightCache <RetryCache.CacheEntry, RetryCache.CacheEntry>)namesystem
.GetRetryCache().GetCacheSet();
NUnit.Framework.Assert.AreEqual(25, cacheSet.Size());
iter = cacheSet.GetEnumerator();
while (iter.HasNext())
{
RetryCache.CacheEntry entry = iter.Next();
NUnit.Framework.Assert.IsTrue(oldEntries.Contains(entry));
}
}
/// <summary>
/// Run file operations to create edits for all op codes
/// to be tested.
/// </summary>
/// <remarks>
/// Run file operations to create edits for all op codes
/// to be tested.
/// the following op codes are deprecated and therefore not tested:
/// OP_DATANODE_ADD ( 5)
/// OP_DATANODE_REMOVE ( 6)
/// OP_SET_NS_QUOTA (11)
/// OP_CLEAR_NS_QUOTA (12)
/// </remarks>
/// <exception cref="System.IO.IOException"/>
private CheckpointSignature RunOperations()
{
Log.Info("Creating edits by performing fs operations");
// no check, if it's not it throws an exception which is what we want
DistributedFileSystem dfs = cluster.GetFileSystem();
DFSTestUtil.RunOperations(cluster, dfs, cluster.GetConfiguration(0), dfs.GetDefaultBlockSize
(), 0);
// OP_ROLLING_UPGRADE_START
cluster.GetNamesystem().GetEditLog().LogStartRollingUpgrade(Time.Now());
// OP_ROLLING_UPGRADE_FINALIZE
cluster.GetNamesystem().GetEditLog().LogFinalizeRollingUpgrade(Time.Now());
// Force a roll so we get an OP_END_LOG_SEGMENT txn
return(cluster.GetNameNodeRpc().RollEditLog());
}