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https://issues.apache.org/jira/browse/HADOOP-1872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12534423
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stack commented on HADOOP-1872:
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Just tried it on following:
{code}
[EMAIL PROTECTED]:~/hadoop/src/contrib/hbase$ more /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.60GHz
stepping : 6
cpu MHz : 600.000
cache size : 2048 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr mce cx8 sep mtrr pge mca cmov pat
clflush dts acpi mmx fxsr sse sse2 ss tm pbe up est tm2
bogomips : 1197.84
clflush size : 64
[EMAIL PROTECTED]:~/hadoop/src/contrib/hbase$ more /etc/issue
Ubuntu 7.04 \n \l
{code}
TestCompaction passed.
> [hbase] TestCompaction assertions fail on some hosts
> ----------------------------------------------------
>
> Key: HADOOP-1872
> URL: https://issues.apache.org/jira/browse/HADOOP-1872
> Project: Hadoop
> Issue Type: Bug
> Components: contrib/hbase
> Reporter: stack
> Assignee: stack
> Attachments: samepatchdifferentname.patch, testcompaction.patch
>
>
> Changes to TestCompaction introduced in hadoop-1768 passed an hudson build
> (#722) but reports on the hadoop irc have them failing on an an hp+ubuntu box:
> {code}
> cutting> it's nothing fancy. /proc/cpuinfo shows "Intel(R) Pentium(R) 4
> CPU 3.20GHz".
> <buenaventura> Thats single-cpu...
> <cutting> yep
> <cutting> 1GB of ram. bog standard pc.
> <cutting> running java 5, not java 6, if that matters.
> {code}
> (Failed also w/ java6).
> The assertion that fails is count of row versions after a compaction and
> flush. There are usually 4 -- the 3 from stores and one that is in a flush
> that happened 'concurrent' to the compaction -- but there can be 3 only (the
> maximum for a column) if non-intuitively the compaction thread starts after
> the flush finishes which can happen with certain jvm schedulers (hudson is
> one such).
> I commented out the assertions to get the build working again. This issue is
> about adding them back in again in a manner that has them working on hudson
> and the bog-standard hp+ubuntu.
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