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https://issues.apache.org/jira/browse/HADOOP-14502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zhe Zhang updated HADOOP-14502:
-------------------------------
Hadoop Flags: Incompatible change,Reviewed (was: Incompatible change)
Thanks Erik! +1 on v2 patch as well. Tested with {{MiniHadoopClusterManager}}
and it shows desired behavior.
{code}
}, {
"name" : "Hadoop:service=NameNode,name=NameNodeActivity",
"modelerType" : "NameNodeActivity",
"tag.ProcessName" : "NameNode",
"tag.SessionId" : null,
"tag.Context" : "dfs",
"tag.Hostname" : "zezhang-mn1",
"CreateFileOps" : 2,
"FilesCreated" : 12,
"FilesAppended" : 0,
"GetBlockLocations" : 0,
"FilesRenamed" : 0,
"FilesTruncated" : 0,
"GetListingOps" : 1,
"DeleteFileOps" : 0,
"FilesDeleted" : 0,
"FileInfoOps" : 6,
"AddBlockOps" : 2,
"GetAdditionalDatanodeOps" : 0,
"CreateSymlinkOps" : 0,
"GetLinkTargetOps" : 0,
"FilesInGetListingOps" : 0,
"AllowSnapshotOps" : 0,
"DisallowSnapshotOps" : 0,
"CreateSnapshotOps" : 0,
"DeleteSnapshotOps" : 0,
"RenameSnapshotOps" : 0,
"ListSnapshottableDirOps" : 0,
"SnapshotDiffReportOps" : 0,
"BlockReceivedAndDeletedOps" : 2,
"BlockOpsQueued" : 1,
"BlockOpsBatched" : 0,
"TransactionsNumOps" : 24,
"TransactionsAvgTime" : 1.7083333333333333,
"SyncsNumOps" : 14,
"SyncsAvgTime" : 0.2857142857142857,
"TransactionsBatchedInSync" : 10,
"StorageBlockReportNumOps" : 2,
"StorageBlockReportAvgTime" : 3.5,
"CacheReportNumOps" : 0,
"CacheReportAvgTime" : 0.0,
"GenerateEDEKTimeNumOps" : 0,
"GenerateEDEKTimeAvgTime" : 0.0,
"WarmUpEDEKTimeNumOps" : 0,
"WarmUpEDEKTimeAvgTime" : 0.0,
"ResourceCheckTimeNumOps" : 8,
"ResourceCheckTimeAvgTime" : 0.0,
"SafeModeTime" : 1,
"FsImageLoadTime" : 76,
"GetEditNumOps" : 0,
"GetEditAvgTime" : 0.0,
"GetImageNumOps" : 0,
"GetImageAvgTime" : 0.0,
"PutImageNumOps" : 0,
"PutImageAvgTime" : 0.0,
"TotalFileOps" : 11
},
{code}
I'm committing to trunk soon. Let's write a short release note?
> Confusion/name conflict between NameNodeActivity#BlockReportNumOps and
> RpcDetailedActivity#BlockReportNumOps
> ------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-14502
> URL: https://issues.apache.org/jira/browse/HADOOP-14502
> Project: Hadoop Common
> Issue Type: Improvement
> Components: metrics
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Minor
> Labels: Incompatible
> Attachments: HADOOP-14502.000.patch, HADOOP-14502.001.patch,
> HADOOP-14502.002.patch
>
>
> Currently the {{BlockReport(NumOps|AvgTime)}} metrics emitted under the
> {{RpcDetailedActivity}} context and those emitted under the
> {{NameNodeActivity}} context are actually reporting different things despite
> having the same name. {{NameNodeActivity}} reports the count/time of _per
> storage_ block reports, whereas {{RpcDetailedActivity}} reports the
> count/time of _per datanode_ block reports. This makes for a confusing
> experience with two metrics having the same name reporting different values.
> We already have the {{StorageBlockReportsOps}} metric under
> {{NameNodeActivity}}. Can we make {{StorageBlockReport}} a {{MutableRate}}
> metric and remove {{NameNodeActivity#BlockReport}} metric? Open to other
> suggestions about how to address this as well. The 3.0 release seems a good
> time to make this incompatible change.
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