You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-commits@hadoop.apache.org by br...@apache.org on 2017/05/23 16:05:01 UTC
[2/4] hadoop git commit: HDFS-11864. Document Metrics to track usage
of memory for writes. Contributed by Yiqun Lin.
HDFS-11864. Document Metrics to track usage of memory for writes. Contributed by Yiqun Lin.
(cherry picked from commit 52661e0912a79d1e851afc2b46c941ce952ca63f)
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/d61418f3
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/d61418f3
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/d61418f3
Branch: refs/heads/branch-2
Commit: d61418f34a6ed86c42c0d145c535d5b080399f21
Parents: ec346d6
Author: Brahma Reddy Battula <br...@apache.org>
Authored: Tue May 23 23:52:42 2017 +0800
Committer: Brahma Reddy Battula <br...@apache.org>
Committed: Tue May 23 23:53:27 2017 +0800
----------------------------------------------------------------------
.../hadoop-common/src/site/markdown/Metrics.md | 15 +++++++++++++++
1 file changed, 15 insertions(+)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/hadoop/blob/d61418f3/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md b/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md
index 106b08d..3d1d3c4 100644
--- a/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/Metrics.md
@@ -284,6 +284,21 @@ Each metrics record contains tags such as SessionId and Hostname as additional i
| `WritesFromLocalClient` | Total number of write operations from local client |
| `WritesFromRemoteClient` | Total number of write operations from remote client |
| `BlocksGetLocalPathInfo` | Total number of operations to get local path names of blocks |
+| `RamDiskBlocksWrite` | Total number of blocks written to memory |
+| `RamDiskBlocksWriteFallback` | Total number of blocks written to memory but not satisfied (failed-over to disk) |
+| `RamDiskBytesWrite` | Total number of bytes written to memory |
+| `RamDiskBlocksReadHits` | Total number of times a block in memory was read |
+| `RamDiskBlocksEvicted` | Total number of blocks evicted in memory |
+| `RamDiskBlocksEvictedWithoutRead` | Total number of blocks evicted in memory without ever being read from memory |
+| `RamDiskBlocksEvictionWindowMsNumOps` | Number of blocks evicted in memory|
+| `RamDiskBlocksEvictionWindowMsAvgTime` | Average time of blocks in memory before being evicted in milliseconds |
+| `RamDiskBlocksEvictionWindows`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of latency between memory write and eviction in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. |
+| `RamDiskBlocksLazyPersisted` | Total number of blocks written to disk by lazy writer |
+| `RamDiskBlocksDeletedBeforeLazyPersisted` | Total number of blocks deleted by application before being persisted to disk |
+| `RamDiskBytesLazyPersisted` | Total number of bytes written to disk by lazy writer |
+| `RamDiskBlocksLazyPersistWindowMsNumOps` | Number of blocks written to disk by lazy writer |
+| `RamDiskBlocksLazyPersistWindowMsAvgTime` | Average time of blocks written to disk by lazy writer in milliseconds |
+| `RamDiskBlocksLazyPersistWindows`*num*`s(50|75|90|95|99)thPercentileLatency` | The 50/75/90/95/99th percentile of latency between memory write and disk persist in milliseconds. Percentile measurement is off by default, by watching no intervals. The intervals are specified by `dfs.metrics.percentiles.intervals`. |
| `FsyncCount` | Total number of fsync |
| `VolumeFailures` | Total number of volume failures occurred |
| `ReadBlockOpNumOps` | Total number of read operations |
---------------------------------------------------------------------
To unsubscribe, e-mail: common-commits-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-commits-help@hadoop.apache.org