On Mon, Apr 13, 2009 at 9:58 AM, Doug Judd <[email protected]> wrote:
> No, it shouldn't.  One thing that might help is to install tcmalloc
> (google-perftools) and then re-build.  You'll need to have tcmalloc
> installed in all your runtime environments.

Ok thanks, I'll try that out hopefully this week and let you know.

> 157 on it a while back.  It would be interesting to know if the disk
> subsystems on any of your machines are getting saturated during this low
> throughput condition.  If so, then there probably is not much we can do

Good point, I'll keep an eye on that.

I was out of town on a short trip over the weekend and I wasn't
watching our Hypertable instance very closely.  During the early
morning hours on Saturday it looks like each of the four machines
running RangeServer/kosmosBroker/ThriftBroker had their memory spike
heavily for about an hour.  The root RangeServer started swapping and
the machine went down later that day.  I can't start the instance back
up at the moment because the root RangeServer is complaining about
this error and dies when I try starting it:

1239651998 ERROR Hypertable.RangeServer : load_next_valid_header
(/data/tmp/dev/src/hypertable/6d5fdd1/src/cc/Hypertable/Lib/CommitLogBlockStream.cc:148):
Hypertable::Exception: Error reading 34 bytes from DFS fd 1057 -
HYPERTABLE failed expectation
        at virtual size_t Hypertable::DfsBroker::Client::read(int32_t, void*,
size_t) 
(/data/tmp/dev/src/hypertable/6d5fdd1/src/cc/DfsBroker/Lib/Client.cc:258)
        at size_t Hypertable::ClientBufferedReaderHandler::read(void*,
size_t) 
(/data/tmp/dev/src/hypertable/6d5fdd1/src/cc/DfsBroker/Lib/ClientBufferedReaderHandler.cc:161):
empty queue

I've attached a file containing the relevant errors at the end of its
log and also the whole kosmosBroker log file for that startup attempt.

Cheers,
Josh

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Attachment: corresponding_DfsBroker.kfs.log.gz
Description: GNU Zip compressed data

Attachment: end_of_root_rangeserver.log.gz
Description: GNU Zip compressed data

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