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HADOOP-11714. Add more trace log4j messages to SpanReceiverHost (cmccabe) 

(cherry picked from commit bf3275dbaa)
This commit is contained in:
Colin Patrick Mccabe 2015-03-16 12:02:10 -07:00
parent fbe811d904
commit eb4eb63de3
2 changed files with 12 additions and 3 deletions
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2
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -257,6 +257,8 @@ Release 2.7.0 - UNRELEASED
HADOOP-11642. Upgrade azure sdk version from 0.6.0 to 2.0.0.
(Shashank Khandelwal and Ivan Mitic via cnauroth)
HADOOP-11714. Add more trace log4j messages to SpanReceiverHost (cmccabe)
OPTIMIZATIONS
HADOOP-11323. WritableComparator#compare keeps reference to byte array.

13
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tracing/SpanReceiverHost.java
View File

@ -134,20 +134,27 @@ public class SpanReceiverHost implements TraceAdminProtocol {
String[] receiverNames =
config.getTrimmedStrings(SPAN_RECEIVERS_CONF_KEY);
if (receiverNames == null || receiverNames.length == 0) {
if (LOG.isTraceEnabled()) {
LOG.trace("No span receiver names found in " +
SPAN_RECEIVERS_CONF_KEY + ".");
}
return;
}
// It's convenient to have each daemon log to a random trace file when
// testing.
if (config.get(LOCAL_FILE_SPAN_RECEIVER_PATH) == null) {
config.set(LOCAL_FILE_SPAN_RECEIVER_PATH,
getUniqueLocalTraceFileName());
String uniqueFile = getUniqueLocalTraceFileName();
config.set(LOCAL_FILE_SPAN_RECEIVER_PATH, uniqueFile);
if (LOG.isTraceEnabled()) {
LOG.trace("Set " + LOCAL_FILE_SPAN_RECEIVER_PATH + " to " + uniqueFile);
}
}
for (String className : receiverNames) {
try {
SpanReceiver rcvr = loadInstance(className, EMPTY);
Trace.addReceiver(rcvr);
receivers.put(highestId++, rcvr);
LOG.info("SpanReceiver " + className + " was loaded successfully.");
LOG.info("Loaded SpanReceiver " + className + " successfully.");
} catch (IOException e) {
LOG.error("Failed to load SpanReceiver", e);
}