Merge pull request #176 from overleaf/ta-epipe-retry-revert

Remove Retries in EPIPE Errors

services/clsi/app/js/DockerRunner.js

@@ -26,7 +26,6 @@ const LockManager = require('./DockerLockManager')
 const fs = require('fs')
 const Path = require('path')
 const _ = require('underscore')
-const metrics = require('metrics-sharelatex')
 
 logger.info('using docker runner')
 
@@ -412,28 +411,19 @@ module.exports = DockerRunner = {
           })
         }
       )
-    var inspectContainer = isRetry =>
-      container.inspect(function(error, stats) {
-        if ((error != null ? error.statusCode : undefined) === 404) {
-          return createAndStartContainer()
-        } else if (error != null) {
-          if (error.message.match(/EPIPE/)) {
-            if (!isRetry) {
-              metrics.inc('container-inspect-epipe-retry')
-              return inspectContainer(true)
-            }
-            metrics.inc('container-inspect-epipe-error')
-          }
-          logger.err(
-            { container_name: name, error },
-            'unable to inspect container to start'
-          )
-          return callback(error)
-        } else {
-          return startExistingContainer()
-        }
-      })
-    inspectContainer(false)
+    return container.inspect(function(error, stats) {
+      if ((error != null ? error.statusCode : undefined) === 404) {
+        return createAndStartContainer()
+      } else if (error != null) {
+        logger.err(
+          { container_name: name, error },
+          'unable to inspect container to start'
+        )
+        return callback(error)
+      } else {
+        return startExistingContainer()
+      }
+    })
   },
 
   attachToContainer(containerId, attachStreamHandler, attachStartCallback) {

services/clsi/test/unit/js/DockerRunnerTests.js

@@ -36,7 +36,6 @@ describe('DockerRunner', function() {
         'logger-sharelatex': (this.logger = {
           log: sinon.stub(),
           error: sinon.stub(),
-          err: sinon.stub(),
           info: sinon.stub(),
           warn: sinon.stub()
         }),
@@ -388,63 +387,6 @@ describe('DockerRunner', function() {
       })
     })
 
-    describe('when inspect always fails with EPIPE error', function() {
-      beforeEach(function() {
-        this.error = new Error('write EPIPE')
-        this.container.inspect = sinon.stub().yields(this.error)
-        this.container.start = sinon.stub().yields()
-
-        this.DockerRunner.startContainer(
-          this.options,
-          this.volumes,
-          () => {},
-          this.callback
-        )
-      })
-
-      it('should retry once', function() {
-        sinon.assert.callOrder(
-          this.container.inspect,
-          this.container.inspect,
-          this.callback
-        )
-      })
-
-      it('should call back with error', function() {
-        sinon.assert.calledWith(this.callback, this.error)
-      })
-    })
-
-    describe('when inspect fails once with EPIPE error', function() {
-      beforeEach(function() {
-        this.container.inspect = sinon.stub()
-        this.container.inspect.onFirstCall().yields(new Error('write EPIPE'))
-        this.container.inspect.onSecondCall().yields()
-        this.container.start = sinon.stub().yields()
-
-        this.DockerRunner.startContainer(
-          this.options,
-          this.volumes,
-          () => {},
-          this.callback
-        )
-      })
-
-      it('should retry once and start container', function() {
-        sinon.assert.callOrder(
-          this.container.inspect,
-          this.container.inspect,
-          this.DockerRunner.attachToContainer,
-          this.container.start,
-          this.callback
-        )
-      })
-
-      it('should call back without error', function() {
-        sinon.assert.calledWith(this.callback, null)
-      })
-    })
-
     describe('when the container does not exist', function() {
       beforeEach(function() {
         const exists = false