Eugene Koifman moved HIVE-17295 to ORC-228:

      Workflow: jira  (was: no-reopen-closed, patch-avail)
    Issue Type: Improvement  (was: Bug)
           Key: ORC-228  (was: HIVE-17295)
       Project: ORC  (was: Hive)

> Make MemoryManagerImpl.ROWS_BETWEEN_CHECKS configurable
> -------------------------------------------------------
>                 Key: ORC-228
>                 URL: https://issues.apache.org/jira/browse/ORC-228
>             Project: ORC
>          Issue Type: Improvement
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
> currently addedRow() looks like
> {noformat}
> public void addedRow(int rows) throws IOException {
>     rowsAddedSinceCheck += rows;
>     if (rowsAddedSinceCheck >= ROWS_BETWEEN_CHECKS) {
>       notifyWriters();
>     }
>   }
> {noformat}
> it would be convenient for testing to set ROWS_BETWEEN_CHECKS to a low value 
> so that we can generate multiple stripes with very little data.
> Currently the only way to do this is to create a new MemoryManager that 
> overrides this method and install it via OrcFile.WriterOptions but this only 
> works when you have control over creating the Writer.
> There is no way to do this via some set of config params to make Hive query 
> for example, create multiple stripes with little data.

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