Trying to rebase https://gerrit.wikimedia.org/r/c/mediawiki/extensions/+/439373 : **Missing blob e959c00909e3b4ae11c26a58616a2d699883dcf3**
```
[2018-06-09 05:35:55,017] [HTTP-8212] ERROR com.google.gerrit.httpd.restapi.RestApiServlet : Error in POST /r/changes/mediawiki%2Fextensions~439373/revisions/1/rebase
com.google.gerrit.server.update.UpdateException: org.eclipse.jgit.errors.MissingObjectException: Missing blob e959c00909e3b4ae11c26a58616a2d699883dcf3
```
```
at com.google.gerrit.server.update.ReviewDbBatchUpdate.executeUpdateRepo(ReviewDbBatchUpdate.java:399)
at com.google.gerrit.server.update.ReviewDbBatchUpdate.execute(ReviewDbBatchUpdate.java:258)
at com.google.gerrit.server.update.ReviewDbBatchUpdate.execute(ReviewDbBatchUpdate.java:361)
at com.google.gerrit.server.update.BatchUpdate.execute(BatchUpdate.java:283)
at com.google.gerrit.server.change.Rebase.applyImpl(Rebase.java:124)
at com.google.gerrit.server.change.Rebase.applyImpl(Rebase.java:64)
at com.google.gerrit.server.update.RetryingRestModifyView.lambda$apply$0(RetryingRestModifyView.java:30)
at com.google.gerrit.server.update.RetryHelper.lambda$execute$0(RetryHelper.java:169)
at com.github.rholder.retry.AttemptTimeLimiters$NoAttemptTimeLimit.call(AttemptTimeLimiters.java:78)
at com.github.rholder.retry.Retryer.call(Retryer.java:160)
at com.google.gerrit.server.update.RetryHelper.execute(RetryHelper.java:169)
at com.google.gerrit.server.update.RetryHelper.execute(RetryHelper.java:148)
at com.google.gerrit.server.update.RetryingRestModifyView.apply(RetryingRestModifyView.java:30)
at com.google.gerrit.httpd.restapi.RestApiServlet.service(RestApiServlet.java:405)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:286)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:276)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:181)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85)
at com.google.gerrit.httpd.raw.StaticModule$PolyGerritFilter.doFilter(StaticModule.java:483)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gerrit.httpd.GetUserFilter.doFilter(GetUserFilter.java:100)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gerrit.httpd.RequireSslFilter.doFilter(RequireSslFilter.java:72)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gerrit.httpd.RunAsFilter.doFilter(RunAsFilter.java:122)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gwtexpui.server.CacheControlFilter.doFilter(CacheControlFilter.java:69)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gerrit.httpd.RequestMetricsFilter.doFilter(RequestMetricsFilter.java:57)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gerrit.httpd.AllRequestFilter$FilterProxy$1.doFilter(AllRequestFilter.java:133)
at com.ericsson.gerrit.plugins.goimport.GoImportFilter.doFilter(GoImportFilter.java:138)
at com.google.gerrit.httpd.AllRequestFilter$FilterProxy$1.doFilter(AllRequestFilter.java:129)
at com.google.gerrit.httpd.AllRequestFilter$FilterProxy.doFilter(AllRequestFilter.java:135)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.gerrit.httpd.RequestContextFilter.doFilter(RequestContextFilter.java:69)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:135)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:224)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle(Server.java:534)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Thread.java:748)
```
```
Caused by: org.eclipse.jgit.errors.MissingObjectException: Missing blob e959c00909e3b4ae11c26a58616a2d699883dcf3
at org.eclipse.jgit.internal.storage.file.WindowCursor.open(WindowCursor.java:164)
at org.eclipse.jgit.lib.ObjectReader$Filter.open(ObjectReader.java:544)
at org.eclipse.jgit.lib.ObjectReader$Filter.open(ObjectReader.java:544)
at org.eclipse.jgit.merge.ResolveMerger.getRawText(ResolveMerger.java:953)
at org.eclipse.jgit.merge.ResolveMerger.contentMerge(ResolveMerger.java:768)
at org.eclipse.jgit.merge.ResolveMerger.processEntry(ResolveMerger.java:747)
at org.eclipse.jgit.merge.ResolveMerger.mergeTreeWalk(ResolveMerger.java:1175)
at org.eclipse.jgit.merge.ResolveMerger.mergeTrees(ResolveMerger.java:1123)
at org.eclipse.jgit.merge.ResolveMerger.mergeImpl(ResolveMerger.java:345)
at org.eclipse.jgit.merge.Merger.merge(Merger.java:258)
at org.eclipse.jgit.merge.Merger.merge(Merger.java:211)
at org.eclipse.jgit.merge.ThreeWayMerger.merge(ThreeWayMerger.java:126)
at com.google.gerrit.server.change.RebaseChangeOp.rebaseCommit(RebaseChangeOp.java:266)
at com.google.gerrit.server.change.RebaseChangeOp.updateRepo(RebaseChangeOp.java:174)
at com.google.gerrit.server.update.ReviewDbBatchUpdate.executeUpdateRepo(ReviewDbBatchUpdate.java:374)
... 61 more
```