Details
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Type:
Improvement
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Status: Closed
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Priority:
Critical
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 0.94.0
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Component/s: regionserver
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Labels:None
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Hadoop Flags:Reviewed
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Tags:noob
Description
The message logged by the RegionServer when a Scanner lease expires isn't as useful as it could be. Scanner 4765412385779771089 lease expired - most clients don't log their scanner ID, so it's really hard to figure out what was going on. I think it would be useful to at least log the name of the region on which the Scanner was open, and it would be great to have the ip:port of the client that had that lease too.
Issue Links
- is related to
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HBASE-3859
Increment a counter when a Scanner lease expires
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- Open
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Activity
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Should we add tablename to the log as well ?
I found only one implementation for RegionScanner:
class RegionScannerImpl implements RegionScanner {
src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
I didn't find much more information in RegionScannerImpl that would help us debug.
+1 on patch (fix spacing on the 'else' on commit)
Won't regionname include name of table?
RegionScanner.getRegionInfo().getTableNameAsString() will give table name.
@Benoit:
What do you think of the patch ?
I haven't found a way of recording the ip:port of the client.
Attached file contains updated patch
Please respect the coding style and add the missing space after the else in the 2nd hunk of the patch.
I wish we could get the ip:port of the client, but this patch is already a bit of an improvement, so let's commit it.
Integrated patch v3 to TRUNK.
Thanks for the patch, Darren.
Thanks for the review, Michael and Benoit.
Integrated in HBase-TRUNK-security #101 (See https://builds.apache.org/job/HBase-TRUNK-security/101/)
HBASE-3850 Log more details when a scanner lease expires (Darren Haas)
tedyu :
Files :
- /hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
Integrated in HBase-TRUNK #2656 (See https://builds.apache.org/job/HBase-TRUNK/2656/)
HBASE-3850 Log more details when a scanner lease expires (Darren Haas)
tedyu :
Files :
- /hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
The attached file is a patch