http://git-wip-us.apache.org/repos/asf/hadoop/blob/19041008/hadoop-common-project/hadoop-common/src/site/markdown/release/2.3.0/RELEASENOTES.2.3.0.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.3.0/RELEASENOTES.2.3.0.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.3.0/RELEASENOTES.2.3.0.md index 43dc922..ad29c29 100644 --- a/hadoop-common-project/hadoop-common/src/site/markdown/release/2.3.0/RELEASENOTES.2.3.0.md +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/2.3.0/RELEASENOTES.2.3.0.md @@ -23,13 +23,6 @@ These release notes cover new developer and user-facing incompatibilities, impor --- -* [HADOOP-10047](https://issues.apache.org/jira/browse/HADOOP-10047) | *Major* | **Add a directbuffer Decompressor API to hadoop** - -Direct Bytebuffer decompressors for Zlib (Deflate & Gzip) and Snappy - - ---- - * [HADOOP-9241](https://issues.apache.org/jira/browse/HADOOP-9241) | *Trivial* | **DU refresh interval is not configurable** The 'du' (disk usage command from Unix) script refresh monitor is now configurable in the same way as its 'df' counterpart, via the property 'fs.du.interval', the default of which is 10 minute (in ms). @@ -73,21 +66,32 @@ Additional information specified on github: https://github.com/DmitryMezhensky/H --- -* [HDFS-5704](https://issues.apache.org/jira/browse/HDFS-5704) | *Major* | **Change OP\_UPDATE\_BLOCKS with a new OP\_ADD\_BLOCK** +* [MAPREDUCE-1176](https://issues.apache.org/jira/browse/MAPREDUCE-1176) | *Major* | **FixedLengthInputFormat and FixedLengthRecordReader** -Add a new editlog record (OP\_ADD\_BLOCK) that only records allocation of the new block instead of the entire block list, on every block allocation. +Addition of FixedLengthInputFormat and FixedLengthRecordReader in the org.apache.hadoop.mapreduce.lib.input package. These two classes can be used when you need to read data from files containing fixed length (fixed width) records. Such files have no CR/LF (or any combination thereof), no delimiters etc, but each record is a fixed length, and extra data is padded with spaces. The data is one gigantic line within a file. When creating a job that specifies this input format, the job must have the "mapreduce.input.fixedlengthinputformat.record.length" property set as follows myJobConf.setInt("mapreduce.input.fixedlengthinputformat.record.length",[myFixedRecordLength]); + +Please see javadoc for more details. --- -* [HDFS-5663](https://issues.apache.org/jira/browse/HDFS-5663) | *Major* | **make the retry time and interval value configurable in openInfo()** +* [HDFS-5502](https://issues.apache.org/jira/browse/HDFS-5502) | *Major* | **Fix HTTPS support in HsftpFileSystem** -Makes the retries and time between retries getting the length of the last block on file configurable. Below are the new configurations. +Fix the https support in HsftpFileSystem. With the change the client now verifies the server certificate. In particular, client side will verify the Common Name of the certificate using a strategy specified by the configuration property "hadoop.ssl.hostname.verifier". -dfs.client.retry.times.get-last-block-length -dfs.client.retry.interval-ms.get-last-block-length -They are set to the 3 and 4000 respectively, these being what was previously hardcoded. +--- + +* [HADOOP-10047](https://issues.apache.org/jira/browse/HADOOP-10047) | *Major* | **Add a directbuffer Decompressor API to hadoop** + +Direct Bytebuffer decompressors for Zlib (Deflate & Gzip) and Snappy + + +--- + +* [HDFS-4997](https://issues.apache.org/jira/browse/HDFS-4997) | *Major* | **libhdfs doesn't return correct error codes in most cases** + +libhdfs now returns correct codes in errno. Previously, due to a bug, many functions set errno to 255 instead of the more specific error code. --- @@ -108,32 +112,28 @@ hadoop.ssl.enabled and dfs.https.enabled are deprecated. When the deprecated con --- -* [HDFS-5502](https://issues.apache.org/jira/browse/HDFS-5502) | *Major* | **Fix HTTPS support in HsftpFileSystem** +* [HDFS-4983](https://issues.apache.org/jira/browse/HDFS-4983) | *Major* | **Numeric usernames do not work with WebHDFS FS** -Fix the https support in HsftpFileSystem. With the change the client now verifies the server certificate. In particular, client side will verify the Common Name of the certificate using a strategy specified by the configuration property "hadoop.ssl.hostname.verifier". +Add a new configuration property "dfs.webhdfs.user.provider.user.pattern" for specifying user name filters for WebHDFS. --- -* [HDFS-4997](https://issues.apache.org/jira/browse/HDFS-4997) | *Major* | **libhdfs doesn't return correct error codes in most cases** - -libhdfs now returns correct codes in errno. Previously, due to a bug, many functions set errno to 255 instead of the more specific error code. - +* [HDFS-5663](https://issues.apache.org/jira/browse/HDFS-5663) | *Major* | **make the retry time and interval value configurable in openInfo()** ---- +Makes the retries and time between retries getting the length of the last block on file configurable. Below are the new configurations. -* [HDFS-4983](https://issues.apache.org/jira/browse/HDFS-4983) | *Major* | **Numeric usernames do not work with WebHDFS FS** +dfs.client.retry.times.get-last-block-length +dfs.client.retry.interval-ms.get-last-block-length -Add a new configuration property "dfs.webhdfs.user.provider.user.pattern" for specifying user name filters for WebHDFS. +They are set to the 3 and 4000 respectively, these being what was previously hardcoded. --- -* [MAPREDUCE-1176](https://issues.apache.org/jira/browse/MAPREDUCE-1176) | *Major* | **FixedLengthInputFormat and FixedLengthRecordReader** - -Addition of FixedLengthInputFormat and FixedLengthRecordReader in the org.apache.hadoop.mapreduce.lib.input package. These two classes can be used when you need to read data from files containing fixed length (fixed width) records. Such files have no CR/LF (or any combination thereof), no delimiters etc, but each record is a fixed length, and extra data is padded with spaces. The data is one gigantic line within a file. When creating a job that specifies this input format, the job must have the "mapreduce.input.fixedlengthinputformat.record.length" property set as follows myJobConf.setInt("mapreduce.input.fixedlengthinputformat.record.length",[myFixedRecordLength]); +* [HDFS-5704](https://issues.apache.org/jira/browse/HDFS-5704) | *Major* | **Change OP\_UPDATE\_BLOCKS with a new OP\_ADD\_BLOCK** -Please see javadoc for more details. +Add a new editlog record (OP\_ADD\_BLOCK) that only records allocation of the new block instead of the entire block list, on every block allocation.
--------------------------------------------------------------------- To unsubscribe, e-mail: common-commits-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-commits-h...@hadoop.apache.org
