[hbase] TestCompaction assertions fail on some hosts
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Key: HADOOP-1872
URL: https://issues.apache.org/jira/browse/HADOOP-1872
Project: Hadoop
Issue Type: Bug
Reporter: stack
Assignee: stack
Priority: Minor
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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