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https://issues.apache.org/jira/browse/ACCUMULO-3727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher Tubbs resolved ACCUMULO-3727.
-----------------------------------------
Resolution: Cannot Reproduce
Lots of new WAL improvements have been made in the 1.9.x releases. This is
likely OBE. However, please open a new issue at
https://github.com/apache/accumulo/issues if it continues to be a problem.
> 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.
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