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added fix for #398 to flush metrics after each emit_metric() #399

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Dec 4, 2018
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added fix for #398 to flush metrics after each emit_metric() #399

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4 changes: 4 additions & 0 deletions collectors/lib/hadoop_http.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
# of the GNU Lesser General Public License along with this program. If not,
# see <http://www.gnu.org/licenses/>.

import sys
import httplib
try:
import json
Expand Down Expand Up @@ -83,6 +84,9 @@ def emit_metric(self, context, current_time, metric_name, value, tag_dict=None):
tag_string = " ".join([k + "=" + v for k, v in tag_dict.iteritems()])
print "%s.%s.%s.%s %d %d %s" % \
(self.service, self.daemon, ".".join(context), metric_name, current_time, value, tag_string)
# flush to protect against subclassed collectors that output few metrics not having enough output to trigger
# buffer flush within 10 mins, which then get killed by TCollector due to "inactivity"
sys.stdout.flush()

def emit(self):
pass