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https://issues.apache.org/jira/browse/HDFS-7358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14201317#comment-14201317
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stack commented on HDFS-7358:
-----------------------------
bq. Hi stack, do you want to open source your test program?
Its a small tool in HBase code base used testing the writing of HBase WAL
files. I ran it like this:
{code}for i in 10 20 100; do for j in 1 2 3; do perf stat
${HOME}/hbase/bin/hbase --config $HOME/conf_hbase
org.apache.hadoop.hbase.regionserver.wal.HLogPerformanceEvaluation -threads $i
-iterations 100000 -key
Size 50 -valueSize 100 &> "/tmp/$1.${i}.${j}.txt"; done; done{code}
It was writing small HDFS cluster.
> 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,
> h7358_20141105.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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