Eric Newton created ACCUMULO-4112:
-------------------------------------
Summary: MinC start/stop updates are always hsync'd
Key: ACCUMULO-4112
URL: https://issues.apache.org/jira/browse/ACCUMULO-4112
Project: Accumulo
Issue Type: Bug
Components: tserver
Environment: Fluo testing on a 20-node cluster
Reporter: Eric Newton
Assignee: Eric Newton
Priority: Minor
[~kturner] writes:
{quote}
I was running a Fluo test with 1.8.0-SNAP on my workstation. My Fluo table had
a ton of tablets. I was seeing terrible performance. I started looking at
the tserver and noticed it was always calling hsync. I tracked down the
problem to the fact that when minc start and stop events are written to the log
they are always written w/ sync level. My poor little tserver was constantly
minor compacting (probably had around 600 tablets that were all being written
to).
I changed the test config to create like 15 tablets and the performance was
much better. All cores were 100% utilized, which was not the case when hsync
was always called.
{quote}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
