-Re: HiveHistoryViewer concurrency problem
Qiang Wang 2013-01-05, 04:59
As I know, hive history log is structured and class *HiveHistory* is used
to write and read hive history log.
*HiveHistoryViewer* serves as a listener to listen and store parsed log
data. It has two members:
HashMap<String, QueryInfo> *jobInfoMap*, which stores QueryInfo related
with hive query
HashMap<String, TaskInfo> *taskInfoMap*, which stores TaskInfo related with
hadoop map/red job
you can dump the two maps and find what you want.
Hope these info helps
2013/1/5 Jie Li <[EMAIL PROTECTED]>
> Hi Qiang,
> Could you describe how HiveHistoryViewer is used? I'm also looking for
> a tool to understand the Hive log.
> On Sat, Jan 5, 2013 at 9:54 AM, Qiang Wang <[EMAIL PROTECTED]> wrote:
> > Does Anybody have an idea about this?
> > https://issues.apache.org/jira/browse/HIVE-3857
> > 2013/1/4 Qiang Wang <[EMAIL PROTECTED]>
> >> new HiveHistoryViewer() throws ConcurrentModificationException when
> >> concurrently by several threads.
> >> According to the stack trace, HiveHistory.parseLine use private static
> >> Map<String, String> parseBuffer to store parsed data and this caused the
> >> exception.
> >> I don't know why a static buffer rather than a local buffer is used!
> >> Anybody have an idea about this?