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https://issues.apache.org/jira/browse/HBASE-4254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gregory Chanan updated HBASE-4254:
----------------------------------
Attachment: HBASE-4254-92.patch
* Attached HBASE-4254-92.patch*
NOTE: I'm not sure if we should commit this, this is just a brainstorm.
This is a patch for hbase-0.92 that fixes
TestLogRolling.testLogRollOnPipelineRestart against hadoop-0.23 while not
breaking it against hadoop-1.0.0. If we want to commit this, I can create
patches for trunk/94.
>From my comment:
1) It sounds like under the current design, we need to call recoverLease to
read from the HLog:
>From the recovery design doc (see HDFS-2288):
"• Any
WaitingToBeRecovered
replica
does
not
serve
any
read and
does
not participate
in
a
pipeline
recovery.
• A
WaitingToBeRecovered
replica
will
either
become
out dated
and
be
deleted
by
NN
if
the
client
is
still
alive
or
be
changed
to
be
finalized
as
a result
of
lease
recovery
if
the
client
dies"
This is basically what I've done: if we cannot get a reader for the HLog b/c
replicas-awaiting-recovery do not return a visible length, recover the lease,
wait for it to finish, then retry getting the HLog reader. (Aside: It would be
nice if the exception HDFS returned in this state was clearer than IOException).
Is this is correct place for this code? Do we need it everywhere we call
HLog.getReader? Any thoughts?
> Get tests passing on Hadoop 23
> ------------------------------
>
> Key: HBASE-4254
> URL: https://issues.apache.org/jira/browse/HBASE-4254
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.92.2
>
> Attachments: HBASE-4254-92.patch
>
>
> Currently some 30 or so tests are failing on the "HBase-trunk-on-hadoop-23"
> build. It looks like most are reflection-based issues.
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