HADOOP-12183. Annotate the HTrace span created by FsShell with the command-line arguments passed by the user (Masatake Iwasaki via Colin P. McCabe)
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@ -739,6 +739,10 @@ Release 2.8.0 - UNRELEASED
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HADOOP-11807. add a lint mode to releasedocmaker (ramtin via aw)
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HADOOP-11807. add a lint mode to releasedocmaker (ramtin via aw)
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HADOOP-12183. Annotate the HTrace span created by FsShell with the
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command-line arguments passed by the user (Masatake Iwasaki via Colin P.
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McCabe)
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OPTIMIZATIONS
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OPTIMIZATIONS
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HADOOP-11785. Reduce the number of listStatus operation in distcp
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HADOOP-11785. Reduce the number of listStatus operation in distcp
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@ -35,6 +35,7 @@
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import org.apache.hadoop.tracing.SpanReceiverHost;
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import org.apache.hadoop.tracing.SpanReceiverHost;
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import org.apache.hadoop.tools.TableListing;
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import org.apache.hadoop.tools.TableListing;
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import org.apache.hadoop.tracing.TraceUtils;
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import org.apache.hadoop.tracing.TraceUtils;
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import org.apache.hadoop.util.StringUtils;
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import org.apache.hadoop.util.Tool;
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import org.apache.hadoop.util.Tool;
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import org.apache.hadoop.util.ToolRunner;
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import org.apache.hadoop.util.ToolRunner;
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import org.apache.htrace.Sampler;
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import org.apache.htrace.Sampler;
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@ -298,6 +299,13 @@ public int run(String argv[]) throws Exception {
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throw new UnknownCommandException();
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throw new UnknownCommandException();
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}
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}
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TraceScope scope = Trace.startSpan(instance.getCommandName(), traceSampler);
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TraceScope scope = Trace.startSpan(instance.getCommandName(), traceSampler);
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if (scope.getSpan() != null) {
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String args = StringUtils.join(" ", argv);
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if (args.length() > 2048) {
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args = args.substring(0, 2048);
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}
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scope.getSpan().addKVAnnotation("args", args);
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}
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try {
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try {
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exitCode = instance.run(Arrays.copyOfRange(argv, 1, argv.length));
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exitCode = instance.run(Arrays.copyOfRange(argv, 1, argv.length));
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} finally {
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} finally {
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@ -24,6 +24,7 @@
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import org.apache.hadoop.util.ToolRunner;
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import org.apache.hadoop.util.ToolRunner;
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import org.apache.htrace.SamplerBuilder;
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import org.apache.htrace.SamplerBuilder;
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import org.apache.htrace.impl.AlwaysSampler;
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import org.apache.htrace.impl.AlwaysSampler;
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import org.junit.Assert;
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import org.junit.Test;
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import org.junit.Test;
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public class TestFsShell {
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public class TestFsShell {
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@ -57,10 +58,13 @@ public void testTracing() throws Throwable {
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FsShell shell = new FsShell(conf);
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FsShell shell = new FsShell(conf);
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int res;
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int res;
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try {
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try {
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res = ToolRunner.run(shell, new String[]{"-help"});
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res = ToolRunner.run(shell, new String[]{"-help", "ls", "cat"});
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} finally {
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} finally {
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shell.close();
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shell.close();
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}
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}
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SetSpanReceiver.assertSpanNamesFound(new String[]{"help"});
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SetSpanReceiver.assertSpanNamesFound(new String[]{"help"});
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Assert.assertEquals("-help ls cat",
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SetSpanReceiver.getMap()
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.get("help").get(0).getKVAnnotations().get("args"));
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}
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}
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}
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}
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