https://github.com/voldemort/voldemort
Revision b8dbbe7fd143634a40892abd3e1bbdda7e86c070 authored by ARUNACHALAM THIRUPATHI on 04 September 2014, 07:31:13 UTC, committed by Arunachalam Thirupathi on 05 September 2014, 14:55:41 UTC
Zone is shrinked when the nodes receive get/put traffic. The bootstrap URL is set to node 1 and node 0 is removed at the end of zone shrinkage. Zone shrinkage metadata is written to nodes in order. So first node 0 receives the update, that it is no longer part of the cluster. But before node 1 is updated, the bootstrap code retries to bootstrap from node 1. This is a race condition between admin client setting correct metadata on all nodes and the client threads refreshing the old value from other nodes. The problem is update metadataversion properties fail as the node 0 is not longer a part of the cluster. The race condition will be avoided if the bootstrap url and the node in which we first write the metadata change are one and the same. This is what this specific fix does, by making sure node 0 is not removed during zone shrinkage.
1 parent e06bd37
Tip revision: b8dbbe7fd143634a40892abd3e1bbdda7e86c070 authored by ARUNACHALAM THIRUPATHI on 04 September 2014, 07:31:13 UTC
ZoneShrinkage endToendTest fails
ZoneShrinkage endToendTest fails
Tip revision: b8dbbe7
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| voldemort-contrib | ||
| .gitignore | -rw-r--r-- | 242 bytes |
| CONTRIBUTORS | -rw-r--r-- | 659 bytes |
| LICENSE | -rw-r--r-- | 11.1 KB |
| NOTES | -rw-r--r-- | 2.5 KB |
| NOTICE | -rw-r--r-- | 8.1 KB |
| README.md | -rw-r--r-- | 4.5 KB |
| build.gradle | -rw-r--r-- | 18.8 KB |
| build.xml | -rw-r--r-- | 22.1 KB |
| gradle.properties | -rw-r--r-- | 1.2 KB |
| gradlew | -rwxr-xr-x | 5.0 KB |
| gradlew.bat | -rw-r--r-- | 2.3 KB |
| release_notes.txt | -rw-r--r-- | 37.3 KB |
| settings.gradle | -rw-r--r-- | 149 bytes |
| tomcat-tasks.properties | -rw-r--r-- | 420 bytes |
| web.xml | -rw-r--r-- | 1.1 KB |
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