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https://issues.apache.org/jira/browse/HDFS-9569?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yongjun Zhang updated HDFS-9569:
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Description:
When NN starts to load fsimage, it does
{code}
void loadFSImageFile(FSNamesystem target, MetaRecoveryContext recovery,
FSImageFile imageFile, StartupOption startupOption) throws IOException {
LOG.debug("Planning to load image :\n" + imageFile);
......
long txId = loader.getLoadedImageTxId();
LOG.info("Loaded image for txid " + txId + " from " + curFile);
{code}
A debug msg is issued at the beginning with the fsimage file name, then at the
end an info msg is issued after loading.
If the fsimage loading failed due to corrupted fsimage (see HDFS-9406), we
don't see the first msg. It'd be helpful to always be able to see from NN logs
what fsimage file it's loading.
Two improvements:
1. Change the above debug to info
2. If exception happens when loading fsimage, be sure to report the fsimage
name being loaded in the error message.
was:
When NN starts to load fsimage, it does
{code}
void loadFSImageFile(FSNamesystem target, MetaRecoveryContext recovery,
FSImageFile imageFile, StartupOption startupOption) throws IOException {
LOG.debug("Planning to load image :\n" + imageFile);
......
long txId = loader.getLoadedImageTxId();
LOG.info("Loaded image for txid " + txId + " from " + curFile);
{code}
A debug msg is issued at the beginning with the fsimage file name, then at the
end an info msg is issued after loading.
If the fsimage loading failed due to corrupted fsimage, we don't see the first
msg. It'd be helpful to always be able to see from NN logs what fsimage file
it's loading.
Creating this jira to change the debug to info.
{code}
Summary: Log the name of the fsimage being loaded for better
supportability (was: Change msg issused before loading fsimage to Info from
debug for better supportability)
> Log the name of the fsimage being loaded for better supportability
> ------------------------------------------------------------------
>
> Key: HDFS-9569
> URL: https://issues.apache.org/jira/browse/HDFS-9569
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Priority: Trivial
>
> When NN starts to load fsimage, it does
> {code}
> void loadFSImageFile(FSNamesystem target, MetaRecoveryContext recovery,
> FSImageFile imageFile, StartupOption startupOption) throws IOException {
> LOG.debug("Planning to load image :\n" + imageFile);
> ......
> long txId = loader.getLoadedImageTxId();
> LOG.info("Loaded image for txid " + txId + " from " + curFile);
> {code}
> A debug msg is issued at the beginning with the fsimage file name, then at
> the end an info msg is issued after loading.
> If the fsimage loading failed due to corrupted fsimage (see HDFS-9406), we
> don't see the first msg. It'd be helpful to always be able to see from NN
> logs what fsimage file it's loading.
> Two improvements:
> 1. Change the above debug to info
> 2. If exception happens when loading fsimage, be sure to report the fsimage
> name being loaded in the error message.
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