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https://issues.apache.org/jira/browse/HDFS-13863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16598144#comment-16598144
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Hudson commented on HDFS-13863:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14855 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14855/])
HDFS-13863. FsDatasetImpl should log DiskOutOfSpaceException. (yqlin: rev
582cb10ec74ed5666946a3769002ceb80ba660cb)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
> FsDatasetImpl should log DiskOutOfSpaceException
> ------------------------------------------------
>
> Key: HDFS-13863
> URL: https://issues.apache.org/jira/browse/HDFS-13863
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 3.1.0, 2.9.1, 3.0.3
> Reporter: Fei Hui
> Assignee: Fei Hui
> Priority: Major
> Fix For: 3.2.0, 3.0.4, 3.1.2
>
> Attachments: HDFS-13863.001.patch, HDFS-13863.002.patch,
> HDFS-13863.003.patch
>
>
> The code in function *createRbw* as follow
> {code:java}
> try {
> // First try to place the block on a transient volume.
> ref = volumes.getNextTransientVolume(b.getNumBytes());
> datanode.getMetrics().incrRamDiskBlocksWrite();
> } catch (DiskOutOfSpaceException de) {
> // Ignore the exception since we just fall back to persistent
> storage.
> } finally {
> if (ref == null) {
> cacheManager.release(b.getNumBytes());
> }
> }
> {code}
> I think we should log the exception because it took me long time to resolve
> problems, and maybe others face the same problems.
> When i test ram_disk, i found no data was written into randomdisk. I debug,
> deep into the source code, and found that randomdisk size was less than
> reserved space. I think if message was logged, i would resolve the problem
> quickly.
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