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Posted to common-issues@hadoop.apache.org by "Mohammad Kamrul Islam (JIRA)" <ji...@apache.org> on 2014/04/04 02:56:18 UTC
[jira] [Resolved] (HADOOP-10409) Bzip2 error message isn't clear
[ https://issues.apache.org/jira/browse/HADOOP-10409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mohammad Kamrul Islam resolved HADOOP-10409.
--------------------------------------------
Resolution: Won't Fix
> Bzip2 error message isn't clear
> -------------------------------
>
> Key: HADOOP-10409
> URL: https://issues.apache.org/jira/browse/HADOOP-10409
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 2.3.0
> Reporter: Travis Thompson
> Assignee: Mohammad Kamrul Islam
>
> If you compile hadoop without {{bzip2-devel}} installed (on RHEL), bzip2 doesn't get compiled into libhadoop, as is expected. This is not documented however and the error message thrown from {{hadoop checknative -a}} is not helpful.
> {noformat}
> [tthompso@eat1-hcl4060 bin]$ hadoop checknative -a
> 14/03/13 00:51:02 WARN bzip2.Bzip2Factory: Failed to load/initialize native-bzip2 library system-native, will use pure-Java version
> 14/03/13 00:51:02 INFO zlib.ZlibFactory: Successfully loaded & initialized native-zlib library
> Native library checking:
> hadoop: true /export/apps/hadoop/hadoop-2.3.0.li7-1-bin/lib/native/libhadoop.so.1.0.0
> zlib: true /lib64/libz.so.1
> snappy: true /usr/lib64/libsnappy.so.1
> lz4: true revision:99
> bzip2: false
> 14/03/13 00:51:02 INFO util.ExitUtil: Exiting with status 1
> {noformat}
> You can see that it wasn't compiled in here:
> {noformat}
> [mislam@eat1-hcl4060 ~]$ strings /export/apps/hadoop/latest/lib/native/libhadoop.so | grep initIDs
> Java_org_apache_hadoop_io_compress_lz4_Lz4Compressor_initIDs
> Java_org_apache_hadoop_io_compress_lz4_Lz4Decompressor_initIDs
> Java_org_apache_hadoop_io_compress_snappy_SnappyCompressor_initIDs
> Java_org_apache_hadoop_io_compress_snappy_SnappyDecompressor_initIDs
> Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_initIDs
> Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_initIDs
> {noformat}
> After installing bzip2-devel and recompiling:
> {noformat}
> [tthompso@eat1-hcl4060 ~]$ hadoop checknative -a
> 14/03/14 23:00:08 INFO bzip2.Bzip2Factory: Successfully loaded & initialized native-bzip2 library system-native
> 14/03/14 23:00:08 INFO zlib.ZlibFactory: Successfully loaded & initialized native-zlib library
> Native library checking:
> hadoop: true /export/apps/hadoop/hadoop-2.3.0.11-2-bin/lib/native/libhadoop.so.1.0.0
> zlib: true /lib64/libz.so.1
> snappy: true /usr/lib64/libsnappy.so.1
> lz4: true revision:99
> bzip2: true /lib64/libbz2.so.1
> {noformat}
> {noformat}
> tthompso@esv4-hcl261:~/hadoop-common(li-2.3.0⚡) » strings ./hadoop-common-project/hadoop-common/target/native/target/usr/local/lib/libhadoop.so |grep initIDs
> Java_org_apache_hadoop_io_compress_lz4_Lz4Compressor_initIDs
> Java_org_apache_hadoop_io_compress_lz4_Lz4Decompressor_initIDs
> Java_org_apache_hadoop_io_compress_snappy_SnappyCompressor_initIDs
> Java_org_apache_hadoop_io_compress_snappy_SnappyDecompressor_initIDs
> Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_initIDs
> Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_initIDs
> Java_org_apache_hadoop_io_compress_bzip2_Bzip2Compressor_initIDs
> Java_org_apache_hadoop_io_compress_bzip2_Bzip2Decompressor_initIDs
> {noformat}
> The error message thrown should hint that perhaps libhadoop wasn't compiled with the bzip2 headers installed. It would also be nice if compile time dependencies were documented somewhere... :)
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