{"action":"created","comment":{"url":"https://api.github.com/repos/twitter/scalding/pulls/comments/25407956","id":25407956,"diff_hunk":"@@ -0,0 +1,228 @@\n+/*\n+Copyright 2015 Twitter, Inc.\n+\n+Licensed under the Apache License, Version 2.0 (the \"License\");\n+you may not use this file except in compliance with the License.\n+You may obtain a copy of the License at\n+\n+http://www.apache.org/licenses/LICENSE-2.0\n+\n+Unless required by applicable law or agreed to in writing, software\n+distributed under the License is distributed on an \"AS IS\" BASIS,\n+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+See the License for the specific language governing permissions and\n+limitations under the License.\n+*/\n+package com.twitter.scalding.serialization\n+\n+import java.io.{ ByteArrayInputStream, ByteArrayOutputStream, InputStream, OutputStream, EOFException }\n+\n+object JavaStreamEnrichments {\n+  def eof: Nothing = throw new EOFException()\n+\n+  implicit class RichByteArrayOutputStream(val baos: ByteArrayOutputStream) extends AnyVal {\n+    def toInputStream: ByteArrayInputStream = new ByteArrayInputStream(baos.toByteArray)\n+  }\n+\n+  def sizeBytes(i: Int): Int =\n+    if (i < ((1 << 8) - 1)) 1\n+    else {\n+      if (i < ((1 << 16) - 1)) {\n+        3\n+      } else {\n+        7\n+      }\n+    }\n+\n+  /**\n+   * This has a lot of methods from DataInputStream without\n+   * having to allocate to get them\n+   * This code is similar to those algorithms\n+   */\n+  implicit class RichInputStream(val s: InputStream) extends AnyVal {","path":"scalding-core/src/main/scala/com/twitter/scalding/serialization/JavaStreamEnrichments.scala","position":42,"original_position":42,"commit_id":"a5e5f011336006542c050fbb3f59ee3adc33ac8f","original_commit_id":"a5e5f011336006542c050fbb3f59ee3adc33ac8f","user":{"login":"johnynek","id":67958,"avatar_url":"https://avatars.githubusercontent.com/u/67958?v=3","gravatar_id":"","url":"https://api.github.com/users/johnynek","html_url":"https://github.com/johnynek","followers_url":"https://api.github.com/users/johnynek/followers","following_url":"https://api.github.com/users/johnynek/following{/other_user}","gists_url":"https://api.github.com/users/johnynek/gists{/gist_id}","starred_url":"https://api.github.com/users/johnynek/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/johnynek/subscriptions","organizations_url":"https://api.github.com/users/johnynek/orgs","repos_url":"https://api.github.com/users/johnynek/repos","events_url":"https://api.github.com/users/johnynek/events{/privacy}","received_events_url":"https://api.github.com/users/johnynek/received_events","type":"User","site_admin":false},"body":"Have you looked at the code in DataInputStream? It is not a just a wrapper, it has lots of internal buffers. Allocating those in a tight loop will not be free. This, being an AnyVal, will not require any allocations.","created_at":"2015-02-26T06:49:02Z","updated_at":"2015-02-26T06:49:02Z","html_url":"https://github.com/twitter/scalding/pull/1208#discussion_r25407956","pull_request_url":"https://api.github.com/repos/twitter/scalding/pulls/1208","_links":{"self":{"href":"https://api.github.com/repos/twitter/scalding/pulls/comments/25407956"},"html":{"href":"https://github.com/twitter/scalding/pull/1208#discussion_r25407956"},"pull_request":{"href":"https://api.github.com/repos/twitter/scalding/pulls/1208"}}},"pull_request":{"url":"https://api.github.com/repos/twitter/scalding/pulls/1208","id":30042012,"html_url":"https://github.com/twitter/scalding/pull/1208","diff_url":"https://github.com/twitter/scalding/pull/1208.diff","patch_url":"https://github.com/twitter/scalding/pull/1208.patch","issue_url":"https://api.github.com/repos/twitter/scalding/issues/1208","number":1208,"state":"open","locked":false,"title":"OrderedSerialization support for faster key sorting","user":{"login":"johnynek","id":67958,"avatar_url":"https://avatars.githubusercontent.com/u/67958?v=3","gravatar_id":"","url":"https://api.github.com/users/johnynek","html_url":"https://github.com/johnynek","followers_url":"https://api.github.com/users/johnynek/followers","following_url":"https://api.github.com/users/johnynek/following{/other_user}","gists_url":"https://api.github.com/users/johnynek/gists{/gist_id}","starred_url":"https://api.github.com/users/johnynek/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/johnynek/subscriptions","organizations_url":"https://api.github.com/users/johnynek/orgs","repos_url":"https://api.github.com/users/johnynek/repos","events_url":"https://api.github.com/users/johnynek/events{/privacy}","received_events_url":"https://api.github.com/users/johnynek/received_events","type":"User","site_admin":false},"body":"this does not include the macros. Want to stabilize this first.","created_at":"2015-02-26T01:06:01Z","updated_at":"2015-02-26T06:49:02Z","closed_at":null,"merged_at":null,"merge_commit_sha":"4b8dd5ad2e664d24ed6da5657c11c1b98b5b3268","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/twitter/scalding/pulls/1208/commits","review_comments_url":"https://api.github.com/repos/twitter/scalding/pulls/1208/comments","review_comment_url":"https://api.github.com/repos/twitter/scalding/pulls/comments{/number}","comments_url":"https://api.github.com/repos/twitter/scalding/issues/1208/comments","statuses_url":"https://api.github.com/repos/twitter/scalding/statuses/a5e5f011336006542c050fbb3f59ee3adc33ac8f","head":{"label":"twitter:fbs-staging","ref":"fbs-staging","sha":"a5e5f011336006542c050fbb3f59ee3adc33ac8f","user":{"login":"twitter","id":50278,"avatar_url":"https://avatars.githubusercontent.com/u/50278?v=3","gravatar_id":"","url":"https://api.github.com/users/twitter","html_url":"https://github.com/twitter","followers_url":"https://api.github.com/users/twitter/followers","following_url":"https://api.github.com/users/twitter/following{/other_user}","gists_url":"https://api.github.com/users/twitter/gists{/gist_id}","starred_url":"https://api.github.com/users/twitter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/twitter/subscriptions","organizations_url":"https://api.github.com/users/twitter/orgs","repos_url":"https://api.github.com/users/twitter/repos","events_url":"https://api.github.com/users/twitter/events{/privacy}","received_events_url":"https://api.github.com/users/twitter/received_events","type":"Organization","site_admin":false},"repo":{"id":3146558,"name":"scalding","full_name":"twitter/scalding","owner":{"login":"twitter","id":50278,"avatar_url":"https://avatars.githubusercontent.com/u/50278?v=3","gravatar_id":"","url":"https://api.github.com/users/twitter","html_url":"https://github.com/twitter","followers_url":"https://api.github.com/users/twitter/followers","following_url":"https://api.github.com/users/twitter/following{/other_user}","gists_url":"https://api.github.com/users/twitter/gists{/gist_id}","starred_url":"https://api.github.com/users/twitter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/twitter/subscriptions","organizations_url":"https://api.github.com/users/twitter/orgs","repos_url":"https://api.github.com/users/twitter/repos","events_url":"https://api.github.com/users/twitter/events{/privacy}","received_events_url":"https://api.github.com/users/twitter/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/twitter/scalding","description":"A 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