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https://issues.apache.org/jira/browse/HDFS-7358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14199290#comment-14199290
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stack commented on HDFS-7358:
-----------------------------
bq. I beg you won't see "Queued packet" for seq 9, 23 and 27.
Yes.... See below listing of corresponding 'Queued packet' with missing 9, etc.
{code}
2014-11-05 14:08:54,166 DEBUG [main] hdfs.DFSClient: Queued packet 0
2014-11-05 14:08:54,796 DEBUG [main] hdfs.DFSClient: Queued packet 0
2014-11-05 14:08:54,796 DEBUG [main] hdfs.DFSClient: Queued packet 1
2014-11-05 14:08:57,240 DEBUG [sync.0] hdfs.DFSClient: Queued packet 1
2014-11-05 14:08:57,243 DEBUG [sync.1] hdfs.DFSClient: Queued packet 2
2014-11-05 14:08:57,245 DEBUG [sync.2] hdfs.DFSClient: Queued packet 3
2014-11-05 14:08:57,246 DEBUG [sync.3] hdfs.DFSClient: Queued packet 4
2014-11-05 14:08:57,246 DEBUG [sync.4] hdfs.DFSClient: Queued packet 5
2014-11-05 14:08:57,249 DEBUG [sync.0] hdfs.DFSClient: Queued packet 6
2014-11-05 14:08:57,250 DEBUG [sync.1] hdfs.DFSClient: Queued packet 7
2014-11-05 14:08:57,252 DEBUG [sync.2] hdfs.DFSClient: Queued packet 8
2014-11-05 14:08:57,253 DEBUG [sync.4] hdfs.DFSClient: Queued packet 10
2014-11-05 14:08:57,254 DEBUG [sync.0] hdfs.DFSClient: Queued packet 11
2014-11-05 14:08:57,255 DEBUG [sync.1] hdfs.DFSClient: Queued packet 12
2014-11-05 14:08:57,255 DEBUG [sync.2] hdfs.DFSClient: Queued packet 13
2014-11-05 14:08:57,256 DEBUG [sync.3] hdfs.DFSClient: Queued packet 14
2014-11-05 14:08:57,258 DEBUG [sync.4] hdfs.DFSClient: Queued packet 15
2014-11-05 14:08:57,258 DEBUG [sync.0] hdfs.DFSClient: Queued packet 16
2014-11-05 14:08:57,259 DEBUG [sync.1] hdfs.DFSClient: Queued packet 17
2014-11-05 14:08:57,261 DEBUG [sync.2] hdfs.DFSClient: Queued packet 18
2014-11-05 14:08:57,262 DEBUG [sync.3] hdfs.DFSClient: Queued packet 19
2014-11-05 14:08:57,263 DEBUG [sync.4] hdfs.DFSClient: Queued packet 20
2014-11-05 14:08:57,264 DEBUG [sync.0] hdfs.DFSClient: Queued packet 21
2014-11-05 14:08:57,265 DEBUG [sync.1] hdfs.DFSClient: Queued packet 22
2014-11-05 14:08:57,267 DEBUG [sync.3] hdfs.DFSClient: Queued packet 24
2014-11-05 14:08:57,267 DEBUG [sync.4] hdfs.DFSClient: Queued packet 25
2014-11-05 14:08:57,268 DEBUG [sync.0] hdfs.DFSClient: Queued packet 26
2014-11-05 14:08:57,269 DEBUG [sync.2] hdfs.DFSClient: Queued packet 28
2014-11-05 14:08:57,270 DEBUG [sync.3] hdfs.DFSClient: Queued packet 29
2014-11-05 14:08:57,271 DEBUG [sync.4] hdfs.DFSClient: Queued packet 30
...
{code}
> Clients may get stuck waiting when using ByteArrayManager
> ---------------------------------------------------------
>
> Key: HDFS-7358
> URL: https://issues.apache.org/jira/browse/HDFS-7358
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Attachments: h7358_20141104.patch, h7358_20141104_wait_timeout.patch
>
>
> [~stack] reported that clients might get stuck waiting when using
> ByteArrayManager; see [his
> comments|https://issues.apache.org/jira/browse/HDFS-7276?focusedCommentId=14197036&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14197036].
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