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https://issues.apache.org/jira/browse/MAPREDUCE-2257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025035#comment-13025035
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Rosie Li commented on MAPREDUCE-2257:
-------------------------------------
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:59:
warning: [deprecation] org.apache.hadoop.mapred.FileSplit in
org.apache.hadoop.mapred has been deprecated
[javac] import org.apache.hadoop.mapred.FileSplit;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:60:
warning: [deprecation] org.apache.hadoop.mapred.InputFormat in
org.apache.hadoop.mapred has been deprecated
[javac] import org.apache.hadoop.mapred.InputFormat;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:61:
warning: [deprecation] org.apache.hadoop.mapred.InputSplit in
org.apache.hadoop.mapred has been deprecated
[javac] import org.apache.hadoop.mapred.InputSplit;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:63:
warning: [deprecation] org.apache.hadoop.mapred.JobClient in
org.apache.hadoop.mapred has been deprecated
[javac] import org.apache.hadoop.mapred.JobClient;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:64:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] import org.apache.hadoop.mapred.JobConf;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:66:
warning: [deprecation] org.apache.hadoop.mapred.Mapper in
org.apache.hadoop.mapred has been deprecated
[javac] import org.apache.hadoop.mapred.Mapper;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:211:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] private JobConf conf;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:738:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] private static void checkSrcPath(JobConf jobConf, List<Path>
srcPaths)
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:831:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] static private void finalize(Configuration conf, JobConf jobconf,
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:1096:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] private static int setMapCount(long totalBytes, JobConf job)
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:1120:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] private static JobConf createJobConf(Configuration conf) {
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:1148:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] private static void setReplication(Configuration conf, JobConf
jobConf,
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:1190:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] static boolean setup(Configuration conf, JobConf jobConf,
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:1562:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] FileSystem jobfs, Path jobdir, JobConf jobconf, Configuration
conf
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:257:
warning: [deprecation] org.apache.hadoop.mapred.InputFormat in
org.apache.hadoop.mapred has been deprecated
[javac] static class CopyInputFormat implements InputFormat<Text, Text> {
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:265:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] public InputSplit[] getSplits(JobConf job, int numSplits)
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:265:
warning: [deprecation] org.apache.hadoop.mapred.InputSplit in
org.apache.hadoop.mapred has been deprecated
[javac] public InputSplit[] getSplits(JobConf job, int numSplits)
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:316:
warning: [deprecation] org.apache.hadoop.mapred.InputSplit in
org.apache.hadoop.mapred has been deprecated
[javac] public RecordReader<Text, Text> getRecordReader(InputSplit
split,
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:317:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] JobConf job, Reporter reporter) throws IOException {
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:326:
warning: [deprecation] org.apache.hadoop.mapred.Mapper in
org.apache.hadoop.mapred has been deprecated
[javac] implements Mapper<LongWritable, FilePair,
WritableComparable<?>, Text> {
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:337:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] private JobConf job;
[javac] ^
[javac]
/data/users/rosieli/hadoop_jira/hadoop-mapred-trunk/src/tools/org/apache/hadoop/tools/DistCp.java:617:
warning: [deprecation] org.apache.hadoop.mapred.JobConf in
org.apache.hadoop.mapred has been deprecated
[javac] public void configure(JobConf job)
For the warning added, they are all from using deprecated class.
> distcp can copy blocks in parallel
> ----------------------------------
>
> Key: MAPREDUCE-2257
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2257
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: distcp
> Affects Versions: 0.21.0
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Attachments: MAPREDUCE-2257.patch
>
>
> The minimum unit of work for a distcp task is a file. We have files that are
> greater than 1 TB with a block size of 1 GB. If we use distcp to copy these
> files, the tasks either take a long long long time or finally fails. A better
> way for distcp would be to copy all the source blocks in parallel, and then
> stich the blocks back to files at the destination via the HDFS Concat API
> (HDFS-222)
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