You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@accumulo.apache.org by "Andrew Hulbert (JIRA)" <ji...@apache.org> on 2019/04/19 01:09:00 UTC
[jira] [Commented] (ACCUMULO-3727) FileNotFoundException on
failed/data during recovery
[ https://issues.apache.org/jira/browse/ACCUMULO-3727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16821597#comment-16821597 ]
Andrew Hulbert commented on ACCUMULO-3727:
------------------------------------------
[~ctubbsii] thanks for the update. We are upgrading now to the newest 1.9.3 release. Note that I saw different WAL issues with 1.9.2 and I'll try to capture the situation better next time. Appreciate all the work folks are doing to help.
> FileNotFoundException on failed/data during recovery
> ----------------------------------------------------
>
> Key: ACCUMULO-3727
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3727
> Project: Accumulo
> Issue Type: Bug
> Components: tserver
> Affects Versions: 1.5.2
> Reporter: William Slacum
> Priority: Major
>
> Over night there was a mass failure of Accumulo (most likely due to too many mappers for a job). After restarting Accumulo, one of the metadata tablets failed to load. There was a log message showing a `FileNotFoundException` on the file `hdfs:///accumulo/recovery/<log id>/failed/data`. Removing the `<log id>` directory from HDFS seemed to unclog the jam and things came back (though potentially with data loss).
> I wanted to investigate why somewhere in the plumbing of `TabletServer`, `TabletServerLogger`, and `SortedLogRecovery`, an attempt was made to use the `failure` file.
> I see in `SortedLogRecovery#sort` where the marker file gets created:
> {code}
> public void sort(String name, Path srcPath, String destPath) {
> ...
> } catch (Throwable t) {
> try {
> // parent dir may not exist
> fs.mkdirs(new Path(destPath));
> fs.create(new Path(destPath, "failed")).close();
> } catch (IOException e) {
> log.error("Error creating failed flag file " + name, e);
> }
> log.error(t, t);
> } finally {
> ...
> {code}
> I have not stepped out to figure out where/why the `failed` files gets included in the list of recovered data dir.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)