Merge pull request #4253 from ipfs/release-0.4.11-rc2

update version and changelog for 0.4.11-rc2

CHANGELOG.md

@@ -4,8 +4,9 @@
 
 Ipfs 0.4.11 is a larger release that brings many long-awaited features and
 performance improvements. These include new datastore options, more efficient
-bitswap transfers, circuit relay support, ipld plugins and more! Take a look
-at the full changelog below for a detailed list of every change.
+bitswap transfers, greatly improved resource consumption, circuit relay
+support, ipld plugins, and more! Take a look at the full changelog below for a
+detailed list of every change.
 
 The ipfs datastore has, until now, been a combination of leveldb and a custom
 git-like storage backend called 'flatfs'. This works well enough for the
@@ -31,6 +32,22 @@ ipfs commands to take advantage of bitswap sessions. As nodes update to this
 and future versions, expect to see idle bandwidth usage on the ipfs network
 go down noticably.
 
+The never ending effort to reduce resource consumption had a few important
+updates this release. First, the bitswap sessions changes discussed above will
+help with improving bandwidth usage. Aside from that there are two important
+libp2p updates that improved things significantly. The first was a fix to a bug
+in the dial limiter code that was causing it to not limit outgoing dials
+correctly. This resulted in ipfs running out of file descriptors very
+frequently (as well as incurring a decent amount of excess outgoing bandwidth),
+this has now been fixed. Users who previously received "too many open files"
+errors should see this much less often in 0.4.11. The second change was a
+memory leak in the DHT that was identified and fixed. Streams being tracked in
+a map in the DHT weren't being cleaned up after the peer disconnected leading
+to the multiplexer session not being cleaned up properly. This issue has been
+resolved, and now memory usage appears to be stable over time. There is still a
+lot of work to be done improving memory usage, but we feel this is a solid
+victory.
+
 It is often said that NAT traversal is the hardest problem in peer to peer
 technology, we tend to agree with this. In an effort to provide a more
 ubiquitous p2p mesh, we have implemented a relay mechanism that allows willing
@@ -111,6 +128,7 @@ you.
   - Fix bad multipart message panic in gateway ([ipfs/go-ipfs#4053](https://github.com/ipfs/go-ipfs/pull/4053))
   - Add blocks to the blockstore before returning them from blockservice sessions ([ipfs/go-ipfs#4169](https://github.com/ipfs/go-ipfs/pull/4169))
   - Various fixes for /ipfs fuse code ([ipfs/go-ipfs#4194](https://github.com/ipfs/go-ipfs/pull/4194))
+  - Fix memory leak in dht stream tracking ([ipfs/go-ipfs#4251](https://github.com/ipfs/go-ipfs/pull/4251))
 - General Changes and Refactorings
   - Require go 1.8 ([ipfs/go-ipfs#4044](https://github.com/ipfs/go-ipfs/pull/4044))
   - Change IPFS to use the new pluggable Block to IPLD decoding framework. ([ipfs/go-ipfs#4060](https://github.com/ipfs/go-ipfs/pull/4060))

package.json

@@ -469,6 +469,6 @@
   "language": "go",
   "license": "MIT",
   "name": "go-ipfs",
-  "version": "0.4.11-rc1"
+  "version": "0.4.11-rc2"
 }
 

repo/config/version.go

@@ -4,6 +4,6 @@ package config
 var CurrentCommit string
 
 // CurrentVersionNumber is the current application's version literal
-const CurrentVersionNumber = "0.4.11-rc1"
+const CurrentVersionNumber = "0.4.11-rc2"
 
 const ApiVersion = "/go-ipfs/" + CurrentVersionNumber + "/"