HI all, I'm trying to migrate data from one node cluster (test-1) to three nodes cluster (test-2) with bucket_exporter<http://contrib.basho.com/bucket_exporter.html>. Backend - levelDB.
I've noticed that bucket_exporter<http://contrib.basho.com/bucket_exporter.html> counts number of keys wrongly. $ riak attach (riak@localhost)10> bucket_exporter:export_data('riak@localhost', <<"my_bucket">>, "json", "/tmp/my_bucket"). Got 89141 keys ... (riak@localhost)10> bucket_exporter:export_data('riak@localhost', <<"my_bucket">>, "json", "/tmp/my_bucket"). Got 88978 keys ... (riak@localhost)10> bucket_exporter:export_data('riak@localhost', <<"my_bucket">>, "json", "/tmp/my_bucket"). Got 89869 keys ... I was expecting the same number of keys in all cases. May be the issue isn't caused by bucket_exporter, I don't know. But I'm just unable to migrate buckets from one cluster to another... Sometimes it work, but I got all the time different number of keys in the bucket. Sometimes exporter just hangs without saying anything in the middle of the export process. Sometimes exporter gives up with timeout error. Sometimes I don't even get this "Got xxx keys" message and the node crashes. bucket_importer behaves quite the same way. Could someone explain what happens? But more important questions are: - How can I transfer some buckets from one cluster to another? - Does anybody know what the best way to import-export buckets is? - How can I backup data bucket-wise? Thanks in advance! Vladimir
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