Cannot fetch branch to source directory due to missing delta base

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Symptoms

The following appears in the atlassian-bamboo.log:

2012-10-23 12:37:29,981 ERROR [3-BAM::PlanExec:pool-6-thread-3] [GitRepository] Failed to extract changesets, will return a stub changeset.
com.atlassian.bamboo.repository.RepositoryException: Cannot fetch branch 'refs/heads/master' from 'file:///\\path\to\Git\Master\RepoName' to source directory 'path\to\bamboo_home\xml-data\build-dir\_git-repositories-cache\628be3a9be096f935bccf176e6cb02993a62ecfe'. Cannot fetch branch 'refs/heads/master' from 'file:///\\path\to\Git\Master\RepoName' to source directory 'path\to\bamboo_home\xml-data\build-dir\_git-repositories-cache\628be3a9be096f935bccf176e6cb02993a62ecfe'. Missing delta base 1136673d06115677871a829147f57088b160df5e
	at com.atlassian.bamboo.plugins.git.JGitOperationHelper.fetch(JGitOperationHelper.java:348)
	at com.atlassian.bamboo.plugins.git.JGitOperationHelper.fetch(JGitOperationHelper.java:288)
	at com.atlassian.bamboo.plugins.git.GitRepository$2.get(GitRepository.java:245)
	at com.atlassian.bamboo.plugins.git.GitRepository$2.get(GitRepository.java:240)
	at com.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:315)
	at com.atlassian.bamboo.plugins.git.GitRepository.collectChangesSinceLastBuild(GitRepository.java:239)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectionChangesWithRetry(DefaultChangeDetectionManager.java:384)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuild(DefaultChangeDetectionManager.java:260)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:218)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:136)
	at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuildIfTriggered(DefaultChangeDetectionManager.java:113)
	at com.atlassian.bamboo.v2.trigger.ChangeDetectionListenerAction.process(ChangeDetectionListenerAction.java:100)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$1$1.createBuildDetectionResult(ChainExecutionManagerImpl.java:176)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.createNewChainState(ChainExecutionManagerImpl.java:379)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.access$000(ChainExecutionManagerImpl.java:93)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$1.getChainState(ChainExecutionManagerImpl.java:172)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.tryStartChainState(ChainExecutionManagerImpl.java:252)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.start(ChainExecutionManagerImpl.java:167)

Cause

The repository caches got corrupted.

Resolution

Option 1 (for modern versions of Bamboo)

  • Delete the repository caches on Cog icon > Overview > Repository Settings menu

Option 2

  • Shut down the Bamboo instance;
  • Delete the path\to\bamboo_home\xml-data\build-dir\_git-repositories-cache directory;
  • Restart the Bamboo instance;

  • Run the build again.

Last modified on Dec 5, 2019

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