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[HADOOP-10940] RPC client does no bounds checking of responses
...The rpc client does no bounds checking of server responses. In the case of communicating with an older and incompatible RPC, this may lead to OOM issues and leaking of resources....
, 2016-09-09, 15:59
[HADOOP-13549] Eliminate intermediate buffer for server-side PB encoding
...HADOOP-13426 improved encoding and added framed buffers. Upon further review, the intermediate response buffer is completely unnecessary for PB responses since the size can be pre-comp...
, 2016-09-06, 15:21
[HADOOP-13547] Optimize IPC client protobuf decoding
...Counterpart to HADOOP-13438....
, 2016-09-02, 16:19
[HADOOP-13465] Design Server.Call to be extensible for unified call queue
...The RPC layer supports QoS but other protocols, ex. webhdfs, are completely unconstrained. Generalizing Server.Call to be extensible with simple changes to the handlers will enable uni...
, 2016-09-01, 21:24
[HADOOP-13429] Dispose of unnecessary SASL servers
...The IPC server retains a per-connection SASL server for the duration of the connection. This causes many unnecessary objects to be promoted to old gen. The SASL server should be ...
, 2016-09-01, 21:17
[HADOOP-13426] More efficiently build IPC responses
...The call response buffer is allowed to dynamically grow until a max size is reached. Often times the full size of the response can be known in advance which avoids copies. This i...
, 2016-09-01, 21:16
[HADOOP-13442] Optimize UGI group lookups
...UGI#getGroups and its usage is inefficient. The list is unnecessarily converted to multiple collections.For every invocation, the List<String> from the group provider is converte...
, 2016-08-18, 17:55
[HADOOP-12858] Reduce UGI getGroups overhead
...Group lookup generates excessive garbage with multiple conversions between collections and arrays....
, 2016-08-18, 17:55
[HADOOP-12861] RPC client fails too quickly when server connection limit is reached
...The NN's rpc server immediately closes new client connections when a connection limit is reached. The client rapidly retries a small number of times with no delay which causes clients to fai...
, 2016-08-18, 01:05
[HADOOP-9956] RPC listener inefficiently assigns connections to readers
...The socket listener and readers use a complex synchronization to update the reader's NIO Selector. Updating active selectors is not thread-safe so precautions are required.However, the...
, 2016-06-08, 03:28
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