[
https://issues.apache.org/jira/browse/HBASE-21915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Josh Elser updated HBASE-21915:
-------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 1.5.1
2.1.4
2.3.0
2.0.5
1.4.10
2.2.0
3.0.0
Status: Resolved (was: Patch Available)
This did not come back to branch-1.2 and branch-1.3, as the default hadoop
version of 2.5.1 does not contain {{CanUnbuffer}}. To land this there, we'll
require a different patch which can be handled separately, IMO.
> FileLink$FileLinkInputStream doesn't implement CanUnbuffer
> ----------------------------------------------------------
>
> Key: HBASE-21915
> URL: https://issues.apache.org/jira/browse/HBASE-21915
> Project: HBase
> Issue Type: Bug
> Components: Filesystem Integration
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Major
> Fix For: 3.0.0, 2.2.0, 1.4.10, 2.0.5, 2.3.0, 2.1.4, 1.5.1
>
> Attachments: HBASE-21915.001.patch, HBASE-21915.002.patch
>
>
> FileLinkInputStream is an InputStream which handles the indirection of where
> the real HFile lives. This implementation is wrapped via
> FSDataInputStreamWrapper and is transparent when it's being used by a caller.
> Often, we have an FSDataInputStreamWrapper wrapping a FileLinkInputStream
> which wraps an FSDataInputStream.
> The problem is that FileLinkInputStream does not implement the
> \{{CanUnbuffer}} interface, which means that the underlying
> {{FSDataInputStream}} for the HFile the link refers to doesn't get
> {{unbuffer()}} called on it. This can cause an open Socket to hang around, as
> described in HBASE-9393.
> Both [~wchevreuil] and myself have run into this, each for different users.
> We think the commonality as to why these users saw this (but we haven't run
> into it on our own) is that it requires a very large snapshot to be brought
> into a new system. Big kudos to [~esteban] for his help in diagnosing this as
> well!
> If this analysis is accurate, it would affect all branches.
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
