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[HDFS-8797] WebHdfsFileSystem creates too many connections for pread
...While running a test we found that WebHdfsFileSystem can create several thousand connections when doing a position read of a 200MB file. For each connection the client will connect to the Da...
, 2017-08-04, 22:08
[HDFS-9754] Avoid unnecessary getBlockCollection calls in BlockManager
...Currently BlockManager calls Namesystem#getBlockCollection in order to:1. check if the block has already been abandoned2. identify the storage policy of the block3. meta saveFor #1 we can us...
, 2017-06-20, 17:13
[HDFS-7535] Utilize Snapshot diff report for distcp
...Currently HDFS snapshot diff report can identify file/directory creation, deletion, rename and modification under a snapshottable directory. We can use the diff report for distcp between the...
, 2017-04-25, 09:01
[HDFS-9011] Support splitting BlockReport of a storage into multiple RPC
...Currently if a DataNode has too many blocks (more than 1m by default), it sends multiple RPC to the NameNode for the block report, each RPC contains report for a single storage. However, in ...
, 2017-04-12, 17:18
[HDFS-7622] Erasure Coding: handling file truncation
...This jira will cover the following issues: how to truncate an erasure coded file how to erasure code a file that has been truncated and snapshotted...
, 2017-01-18, 22:50
[HDFS-9063] Correctly handle snapshot path for getContentSummary
...The current getContentSummary implementation does not take into account the snapshot path, thus if we have the following ops:1. create dirs /foo/bar2. take snapshot s1 on /foo3. create a 1 b...
, 2017-01-17, 22:10
[HDFS-7619] Erasure Coding: Handling truncated files in snapshots
...Currently for files within snapshots, the file diff only records block list (before the truncate feature we only recorded file length). Now the file diff should also be able to capture the b...
, 2017-01-11, 00:40
[HDFS-7508] Clean up path resolving in FSNamesystem/FSDirectory
...There are several issues with our current path resolving process: For a single operation we may repeat resolving the same path Each operation needs to invoke multiple calls for path resolvin...
, 2017-01-06, 22:04
[HDFS-8273] FSNamesystem#Delete() should not call logSync() when holding the lock
...HDFS-7573 moves the logSync call inside of the write lock by accident. We should move it out....
, 2017-01-05, 22:47
[HDFS-8127] NameNode Failover during HA upgrade can cause DataNode to finalize upgrade
...Currently for HA upgrade (enabled by HDFS-5138), we use -bootstrapStandby to initialize the standby NameNode. The standby NameNode does not have the previous directory thus it does not know ...
, 2017-01-05, 22:42
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