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From Bryan Duxbury <br...@rapleaf.com>
Subject Re: Interesting heap dump of an OOME running Performance Evaluation on trunk
Date Wed, 26 Mar 2008 18:50:24 GMT
Yikes. 1.3M Texts for 30 regions? that's crazy. Seems like we must be  
doing something wrong there.

On Mar 26, 2008, at 11:37 AM, Jim Kellerman wrote:

> Ok, so no big surprise that there are a lot of Text and HStoreKeys  
> lying
> around, but look at the other stuff hanging out that really should not
> be, esp when you consider the number of HRegions
>
> 1321116 instances of class org.apache.hadoop.io.Text
> 660427 instances of class org.apache.hadoop.hbase.HStoreKey
> 408 instances of class org.apache.hadoop.dfs.DatanodeInfo
> 347 instances of class org.apache.hadoop.fs.Path
> 227 instances of class org.apache.hadoop.io.DataInputBuffer
> 227 instances of class org.apache.hadoop.io.DataInputBuffer$Buffer
> 144 instances of class  
> org.apache.hadoop.io.compress.DecompressorStream
> 136 instances of class org.apache.hadoop.dfs.Block
> 136 instances of class [Lorg.apache.hadoop.dfs.DatanodeInfo;
> 133 instances of class org.apache.hadoop.dfs.LocatedBlock
> 105 instances of class org.apache.log4j.CategoryKey
> 88 instances of class org.apache.hadoop.io.DataOutputBuffer
> 88 instances of class org.apache.hadoop.io.DataOutputBuffer$Buffer
> 78 instances of class org.apache.log4j.Logger
> 77 instances of class org.apache.hadoop.io.SequenceFile$Metadata
> 74 instances of class org.apache.commons.logging.impl.Log4JLogger
> 72 instances of class org.apache.hadoop.dfs.DFSClient 
> $DFSDataInputStream
> 72 instances of class org.apache.hadoop.dfs.DFSClient$DFSInputStream
> 72 instances of class org.apache.hadoop.dfs.LocatedBlocks
> 72 instances of class org.apache.hadoop.io.SequenceFile$Reader
> 72 instances of class  
> org.apache.hadoop.io.compress.zlib.BuiltInZlibInflater
> 70 instances of class org.apache.hadoop.dfs.DFSClient 
> $DFSOutputStream$Packet
> 44 instances of class org.apache.hadoop.dfs.DataChecksum
> 39 instances of class org.apache.hadoop.dfs.DFSClient$BlockReader
> 38 instances of class org.apache.hadoop.io.WritableComparator
> 38 instances of class org.apache.hadoop.io.compress.DefaultCodec
> 35 instances of class org.apache.hadoop.hbase.HStoreFile
> 33 instances of class org.apache.hadoop.hbase.HColumnDescriptor
> 33 instances of class org.apache.hadoop.hbase.HRegionInfo
> 33 instances of class org.apache.hadoop.hbase.HRegionServer$QueueEntry
> 33 instances of class org.apache.hadoop.hbase.HTableDescriptor
> 33 instances of class [Lorg.apache.hadoop.io.WritableComparable;
> 30 instances of class org.apache.hadoop.hbase.HRegion
> 30 instances of class org.apache.hadoop.hbase.HRegion$WriteState
> 30 instances of class org.apache.hadoop.hbase.HStoreFile 
> $BloomFilterMapFile$Reader
> 30 instances of class org.mortbay.util.StringMap$Node
> 29 instances of class org.apache.hadoop.hbase.HStore
> 29 instances of class org.apache.hadoop.hbase.HStore$Memcache
> 27 instances of class org.apache.log4j.ProvisionNode
> 14 instances of class org.mortbay.util.StringMap
> 13 instances of class org.apache.log4j.Level
> 10 instances of class org.apache.hadoop.ipc.Server$Handler
> 10 instances of class org.mortbay.http.PathMap$Entry
> 8 instances of class org.apache.hadoop.fs.permission.FsAction
> 8 instances of class org.apache.hadoop.hbase.io.ImmutableBytesWritable
> 8 instances of class org.apache.hadoop.ipc.Server$Connection
> 8 instances of class [Lorg.mortbay.util.StringMap$Node;
> 6 instances of class org.apache.hadoop.hbase.HStoreFile 
> $HalfMapFileReader
> 6 instances of class  
> org.apache.hadoop.metrics.util.MetricsTimeVaryingRate$Metrics
> 6 instances of class org.apache.log4j.helpers.PatternParser 
> $LiteralPatternConverter
> 5 instances of class org.apache.hadoop.dfs.DFSClient$DFSOutputStream
> 5 instances of class org.apache.hadoop.dfs.DFSClient$DFSOutputStream 
> $DataStreamer
> 5 instances of class org.apache.hadoop.fs.FSDataOutputStream
> 5 instances of class org.apache.hadoop.fs.FSDataOutputStream 
> $PositionCache
> 5 instances of class org.apache.hadoop.hbase.io.BatchOperation
> 5 instances of class org.apache.hadoop.hbase.io.BatchUpdate
> 5 instances of class org.apache.hadoop.hbase.ipc.HbaseRPC$Invocation
> 5 instances of class org.apache.hadoop.ipc.Server$Call
> 5 instances of class org.mortbay.jetty.servlet.ServletHolder
> 5 instances of class org.mortbay.jetty.servlet.ServletHolder$Config
> 4 instances of class org.apache.hadoop.io.BytesWritable
> 4 instances of class org.apache.hadoop.io.LongWritable
> 4 instances of class org.mortbay.http.PathMap
> 3 instances of class org.apache.hadoop.dfs.DFSClient$DFSOutputStream 
> $ResponseProcessor
> 3 instances of class org.apache.hadoop.dfs.DatanodeInfo$AdminStates
> 3 instances of class org.apache.hadoop.dfs.FSConstants 
> $DatanodeReportType
> 3 instances of class org.apache.hadoop.dfs.FSConstants$SafeModeAction
> 3 instances of class org.apache.hadoop.dfs.FSConstants$UpgradeAction
> 3 instances of class org.apache.hadoop.hbase.HAbstractScanner 
> $MATCH_TYPE
> 3 instances of class org.apache.hadoop.hbase.HColumnDescriptor 
> $CompressionType
> 3 instances of class org.apache.hadoop.hbase.HStore 
> $MapFileCompactionReader
> 3 instances of class org.apache.hadoop.hbase.HStoreFile$Reference
> 3 instances of class org.apache.hadoop.hbase.ipc.HbaseRPC$Invoker
> 3 instances of class org.apache.hadoop.io.SequenceFile$CompressionType
> 3 instances of class org.apache.hadoop.io.SequenceFile$Writer
> 3 instances of class  
> org.apache.hadoop.metrics.util.MetricsTimeVaryingRate
> 3 instances of class  
> org.apache.hadoop.metrics.util.MetricsTimeVaryingRate$MinMax
> 3 instances of class org.apache.hadoop.net.StandardSocketFactory
> 3 instances of class org.apache.log4j.helpers.PatternParser 
> $BasicPatternConverter
> 3 instances of class org.mortbay.util.FileResource
> 3 instances of class [Lorg.apache.hadoop.io.Text;
> 2 instances of class org.apache.commons.logging.impl.LogFactoryImpl
> 2 instances of class org.apache.hadoop.dfs.$Proxy1
> 2 instances of class org.apache.hadoop.hbase.HBaseConfiguration
> 2 instances of class org.apache.hadoop.hbase.HServerAddress
> 2 instances of class org.apache.hadoop.hbase.HStoreFile 
> $BloomFilterMapFile$Writer
> 2 instances of class org.apache.hadoop.hbase.HStoreFile$Range
> 2 instances of class org.apache.hadoop.hbase.util.Sleeper
> 2 instances of class org.apache.hadoop.io.BytesWritable$Comparator
> 2 instances of class org.apache.hadoop.io.SequenceFile 
> $BlockCompressWriter
> 2 instances of class org.apache.hadoop.io.SequenceFile$CodecPool
> 2 instances of class org.apache.hadoop.io.UTF8
> 2 instances of class org.apache.hadoop.io.compress.CompressorStream
> 2 instances of class  
> org.apache.hadoop.io.compress.zlib.BuiltInZlibDeflater
> 2 instances of class org.apache.hadoop.ipc.Client
> 2 instances of class org.apache.hadoop.ipc.Client$Connection
> 2 instances of class org.apache.hadoop.ipc.Client$Connection$1
> 2 instances of class org.apache.hadoop.ipc.Client$Connection$2
> 2 instances of class org.apache.hadoop.ipc.Client$ConnectionCuller
> 2 instances of class org.apache.hadoop.ipc.Client$ConnectionId
> 2 instances of class org.apache.log4j.helpers.OnlyOnceErrorHandler
> 2 instances of class org.mortbay.http.ResourceCache
> 2 instances of class org.mortbay.http.handler.ErrorPageHandler
> 2 instances of class org.mortbay.util.MultiMap
> 2 instances of class org.mortbay.util.SingletonList
> 2 instances of class org.mortbay.util.ThreadPool$PoolThread
> 2 instances of class [Lorg.apache.hadoop.dfs.DatanodeInfo$AdminStates;
> 2 instances of class [Lorg.apache.hadoop.io.SequenceFile 
> $CompressionType;
> 2 instances of class [Lorg.mortbay.http.HttpHandler;
> 1 instance of class $Proxy0
> 1 instance of class $Proxy2
> 1 instance of class $Proxy3
> 1 instance of class org.apache.hadoop.dfs.Block$1
> 1 instance of class org.apache.hadoop.dfs.DFSClient
> 1 instance of class org.apache.hadoop.dfs.DFSClient$LeaseChecker
> 1 instance of class org.apache.hadoop.dfs.DFSFileInfo$1
> 1 instance of class org.apache.hadoop.dfs.DatanodeInfo$1
> 1 instance of class org.apache.hadoop.dfs.DistributedFileSystem
> 1 instance of class org.apache.hadoop.dfs.LocatedBlock$1
> 1 instance of class org.apache.hadoop.dfs.LocatedBlocks$2
> 1 instance of class org.apache.hadoop.fs.FileSystem$1
> 1 instance of class org.apache.hadoop.fs.FileSystem$Cache
> 1 instance of class org.apache.hadoop.fs.FileSystem$Cache$Key
> 1 instance of class org.apache.hadoop.fs.FileSystem$ClientFinalizer
> 1 instance of class org.apache.hadoop.fs.permission.FsPermission$1
> 1 instance of class org.apache.hadoop.hbase.HConnectionManager 
> $TableServers
> 1 instance of class org.apache.hadoop.hbase.HLog
> 1 instance of class org.apache.hadoop.hbase.HLogEdit
> 1 instance of class org.apache.hadoop.hbase.HLogKey
> 1 instance of class org.apache.hadoop.hbase.HRegionLocation
> 1 instance of class org.apache.hadoop.hbase.HRegionServer
> 1 instance of class org.apache.hadoop.hbase.HRegionServer$1
> 1 instance of class org.apache.hadoop.hbase.HRegionServer 
> $CompactSplitThread
> 1 instance of class org.apache.hadoop.hbase.HRegionServer$Flusher
> 1 instance of class org.apache.hadoop.hbase.HRegionServer$LogRoller
> 1 instance of class org.apache.hadoop.hbase.HRegionServer 
> $ShutdownThread
> 1 instance of class org.apache.hadoop.hbase.HRegionServer$Worker
> 1 instance of class org.apache.hadoop.hbase.HServerInfo
> 1 instance of class org.apache.hadoop.hbase.HServerLoad
> 1 instance of class org.apache.hadoop.hbase.HTable
> 1 instance of class org.apache.hadoop.hbase.Leases
> 1 instance of class org.apache.hadoop.hbase.Leases$LeaseMonitor
> 1 instance of class  
> org.apache.hadoop.hbase.io.ImmutableBytesWritable$Comparator
> 1 instance of class org.apache.hadoop.hbase.ipc.HbaseRPC$Server
> 1 instance of class org.apache.hadoop.hbase.util.InfoServer
> 1 instance of class org.apache.hadoop.io.LongWritable$Comparator
> 1 instance of class org.apache.hadoop.io.Text$Comparator
> 1 instance of class org.apache.hadoop.io.UTF8$Comparator
> 1 instance of class org.apache.hadoop.io.WritableUtils$1
> 1 instance of class org.apache.hadoop.io.retry.RetryInvocationHandler
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $ExceptionDependentRetry
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $ExponentialBackoffRetry
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $RemoteExceptionDependentRetry
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $RetryForever
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $RetryUpToMaximumCountWithFixedSleep
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $TryOnceDontFail
> 1 instance of class org.apache.hadoop.io.retry.RetryPolicies 
> $TryOnceThenFail
> 1 instance of class org.apache.hadoop.ipc.RPC$Invoker
> 1 instance of class org.apache.hadoop.ipc.Server$Listener
> 1 instance of class org.apache.hadoop.ipc.Server$Responder
> 1 instance of class org.apache.hadoop.ipc.metrics.RpcMetrics
> 1 instance of class org.apache.hadoop.ipc.metrics.RpcMgt
> 1 instance of class org.apache.hadoop.metrics.ContextFactory
> 1 instance of class org.apache.hadoop.metrics.jvm.EventCounter
> 1 instance of class org.apache.hadoop.metrics.jvm.EventCounter 
> $EventCounts
> 1 instance of class  
> org.apache.hadoop.metrics.spi.AbstractMetricsContext$RecordMap
> 1 instance of class  
> org.apache.hadoop.metrics.spi.AbstractMetricsContext$TagMap
> 1 instance of class org.apache.hadoop.metrics.spi.MetricsRecordImpl
> 1 instance of class org.apache.hadoop.metrics.spi.NullContext
> 1 instance of class  
> org.apache.hadoop.security.UnixUserGroupInformation
> 1 instance of class org.apache.hadoop.util.Daemon
> 1 instance of class org.apache.jasper.EmbeddedServletOptions
> 1 instance of class org.apache.jasper.compiler.JspConfig
> 1 instance of class org.apache.jasper.compiler.JspRuntimeContext
> 1 instance of class org.apache.jasper.compiler.TagPluginManager
> 1 instance of class org.apache.jasper.compiler.TldLocationsCache
> 1 instance of class org.apache.jasper.runtime.JspFactoryImpl
> 1 instance of class org.apache.jasper.servlet.JspServlet
> 1 instance of class org.apache.jasper.util.SimplePool
> 1 instance of class org.apache.jasper.util.SystemLogHandler
> 1 instance of class org.apache.log4j.ConsoleAppender
> 1 instance of class org.apache.log4j.DefaultCategoryFactory
> 1 instance of class org.apache.log4j.Hierarchy
> 1 instance of class org.apache.log4j.PatternLayout
> 1 instance of class org.apache.log4j.helpers.AppenderAttachableImpl
> 1 instance of class org.apache.log4j.helpers.FormattingInfo
> 1 instance of class org.apache.log4j.helpers.ISO8601DateFormat
> 1 instance of class org.apache.log4j.helpers.PatternParser
> 1 instance of class org.apache.log4j.helpers.PatternParser 
> $ClassNamePatternConverter
> 1 instance of class org.apache.log4j.helpers.PatternParser 
> $DatePatternConverter
> 1 instance of class org.apache.log4j.helpers.PatternParser 
> $LocationPatternConverter
> 1 instance of class org.apache.log4j.helpers.QuietWriter
> 1 instance of class org.apache.log4j.or.DefaultRenderer
> 1 instance of class org.apache.log4j.or.RendererMap
> 1 instance of class org.apache.log4j.spi.DefaultRepositorySelector
> 1 instance of class org.apache.log4j.spi.RootLogger
> 1 instance of class org.mortbay.http.ContextLoader
> 1 instance of class org.mortbay.http.HttpContext
> 1 instance of class org.mortbay.http.SocketListener
> 1 instance of class org.mortbay.http.handler.ResourceHandler
> 1 instance of class org.mortbay.jetty.Server
> 1 instance of class org.mortbay.jetty.servlet.AbstractSessionManager 
> $SessionScavenger
> 1 instance of class org.mortbay.jetty.servlet.Default
> 1 instance of class org.mortbay.jetty.servlet.HashSessionManager
> 1 instance of class org.mortbay.jetty.servlet.JettyWebConfiguration
> 1 instance of class org.mortbay.jetty.servlet.ServletHandler$Context
> 1 instance of class org.mortbay.jetty.servlet.WebApplicationContext
> 1 instance of class org.mortbay.jetty.servlet.WebApplicationHandler
> 1 instance of class org.mortbay.jetty.servlet.XMLConfiguration
> 1 instance of class org.mortbay.util.IO$NullOS
> 1 instance of class org.mortbay.util.IO$NullWrite
> 1 instance of class org.mortbay.util.InetAddrPort
> 1 instance of class org.mortbay.util.Pool
> 1 instance of class org.mortbay.util.StringMap$NullEntry
> 1 instance of class org.mortbay.util.ThreadedServer$Acceptor
> 1 instance of class org.mortbay.xml.XmlParser
> 1 instance of class org.mortbay.xml.XmlParser$Handler
> 1 instance of class org.mortbay.xml.XmlParser$NoopHandler
> 1 instance of class [Lorg.apache.hadoop.dfs.FSConstants 
> $DatanodeReportType;
> 1 instance of class [Lorg.apache.hadoop.dfs.FSConstants 
> $SafeModeAction;
> 1 instance of class [Lorg.apache.hadoop.dfs.FSConstants$UpgradeAction;
> 1 instance of class [Lorg.apache.hadoop.fs.permission.FsAction;
> 1 instance of class [Lorg.apache.hadoop.hbase.HAbstractScanner 
> $MATCH_TYPE;
> 1 instance of class [Lorg.apache.hadoop.hbase.HColumnDescriptor 
> $CompressionType;
> 1 instance of class [Lorg.apache.hadoop.hbase.HStore$CompactionReader;
> 1 instance of class [Lorg.apache.hadoop.hbase.HStoreFile$Range;
> 1 instance of class [Lorg.apache.hadoop.hbase.HStoreKey;
> 1 instance of class  
> [Lorg.apache.hadoop.hbase.io.ImmutableBytesWritable;
> 1 instance of class [Lorg.apache.hadoop.ipc.Server$Handler;
> 1 instance of class  
> [Lorg.mortbay.jetty.servlet.WebApplicationContext$Configuration;
> 1 instance of class [Lorg.mortbay.util.Pool$PondLife;
> 1 instance of class [Lorg.mortbay.util.ThreadedServer$Acceptor;
> 0 instances of class javax.servlet.FilterChain
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> org.apache.hadoop.io.compress.CompressionInputStream
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> org.apache.hadoop.io.compress.CompressionOutputStream
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> org.apache.hadoop.io.compress.zlib.ZlibDecompressor
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> 0 instances of class org.mortbay.jetty.servlet.WebApplicationHandler 
> $Chain
> 0 instances of class org.mortbay.util.BadResource
> 0 instances of class org.mortbay.util.ByteArrayISO8859Writer
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> 0 instances of class org.mortbay.util.Container
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> 0 instances of class org.mortbay.xml.XmlParser$Attribute
> 0 instances of class org.mortbay.xml.XmlParser$Node
> 0 instances of class org.onelab.filter.BloomFilter
> 0 instances of class org.onelab.filter.CountingBloomFilter
> 0 instances of class org.onelab.filter.Filter
> 0 instances of class org.onelab.filter.RemoveScheme
> 0 instances of class org.onelab.filter.RetouchedBloomFilter
> 0 instances of class [Lorg.apache.hadoop.dfs.DFSFileInfo;
> 0 instances of class [Lorg.apache.hadoop.dfs.DatanodeID;
> 0 instances of class [Lorg.apache.hadoop.dfs.LocatedBlock;
> 0 instances of class [Lorg.apache.hadoop.fs.FileStatus;
> 0 instances of class [Lorg.apache.hadoop.fs.Path;
> 0 instances of class [Lorg.apache.hadoop.hbase.HConstants;
> 0 instances of class  
> [Lorg.apache.hadoop.hbase.HInternalScannerInterface;
> 0 instances of class [Lorg.apache.hadoop.hbase.HMsg;
> 0 instances of class [Lorg.apache.hadoop.hbase.HRegion;
> 0 instances of class [Lorg.apache.hadoop.hbase.HScannerInterface;
> 0 instances of class [Lorg.apache.hadoop.hbase.HStore;
> 0 instances of class [Lorg.apache.hadoop.io.MapFile$Reader;
> 0 instances of class [Lorg.apache.hadoop.io.Writable;
> 0 instances of class [Lorg.apache.hadoop.net.Node;
> 0 instances of class [Lorg.mortbay.http.HttpContext;
> 0 instances of class [Lorg.mortbay.http.HttpListener;
> 0 instances of class [Lorg.mortbay.jetty.servlet.Holder;
> 0 instances of class [Lorg.mortbay.jetty.servlet.ServletHolder;
> 0 instances of class [Lorg.mortbay.util.Container;
> 0 instances of class [Lorg.mortbay.util.EventProvider;
> 0 instances of class [Lorg.mortbay.util.LifeCycle;
> 0 instances of class [Lorg.mortbay.xml.XmlParser$Attribute;
>
> ---
> Jim Kellerman, Senior Engineer; Powerset
>
> No virus found in this outgoing message.
> Checked by AVG.
> Version: 7.5.519 / Virus Database: 269.22.0/1344 - Release Date:  
> 3/26/2008 8:52 AM
>


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