You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@orc.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2017/08/10 22:45:01 UTC
[jira] [Moved] (ORC-228) Make MemoryManagerImpl.ROWS_BETWEEN_CHECKS
configurable
[ https://issues.apache.org/jira/browse/ORC-228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
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.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)