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https://issues.apache.org/jira/browse/HDDS-4724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17268469#comment-17268469
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Mukul Kumar Singh commented on HDDS-4724:
-----------------------------------------
cc [~erose] [~avijayan]
> Revert column family names of Datanode db to avoid compatibility issue.
> -----------------------------------------------------------------------
>
> Key: HDDS-4724
> URL: https://issues.apache.org/jira/browse/HDDS-4724
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode
> Affects Versions: 1.0.0
> Reporter: Glen Geng
> Assignee: Glen Geng
> Priority: Major
> Labels: pull-request-available
>
> Tencent monthly deploy the latest master to our production environment.
> During latest upgrade test, we found that new Ozone(version at Jan 14 2021)
> can not read the data written by old Ozone(version at Dec 14 2020).
> We found following traces
> {code:java}
> 2021-01-20 16:36:39,575 INFO
> org.apache.hadoop.ozone.container.common.volume.MutableVolumeSet: Added
> Volume : /data4/hdds/hdds to VolumeSet
> 2021-01-20 16:36:39,582 INFO
> org.apache.hadoop.ozone.container.common.volume.ThrottledAsyncChecker:
> Scheduling a check for /data4/hdds/hdds
> 2021-01-20 16:36:39,594 INFO
> org.apache.hadoop.ozone.container.common.volume.HddsVolumeChecker: Scheduled
> health check for volume /data4/hdds/hdds
> 2021-01-20 16:36:39,595 INFO
> org.apache.hadoop.ozone.container.common.volume.ThrottledAsyncChecker:
> Scheduling a check for /data1/hdds/hdds
> 2021-01-20 16:36:39,595 INFO
> org.apache.hadoop.ozone.container.common.volume.HddsVolumeChecker: Scheduled
> health check for volume /data1/hdds/hdds
> 2021-01-20 16:36:39,595 INFO
> org.apache.hadoop.ozone.container.common.volume.ThrottledAsyncChecker:
> Scheduling a check for /data2/hdds/hdds
> 2021-01-20 16:36:39,596 INFO
> org.apache.hadoop.ozone.container.common.volume.HddsVolumeChecker: Scheduled
> health check for volume /data2/hdds/hdds
> 2021-01-20 16:36:39,596 INFO
> org.apache.hadoop.ozone.container.common.volume.ThrottledAsyncChecker:
> Scheduling a check for /data3/hdds/hdds
> 2021-01-20 16:36:39,596 INFO
> org.apache.hadoop.ozone.container.common.volume.HddsVolumeChecker: Scheduled
> health check for volume /data3/hdds/hdds
> 2021-01-20 16:36:39,793 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,794 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,794 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,797 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,916 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,916 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,916 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:39,927 INFO org.apache.hadoop.hdds.utils.db.RDBStore: Found
> the following extra column families in existing DB : [block_data,
> deleted_blocks]
> 2021-01-20 16:36:40,001 WARN
> org.apache.hadoop.ozone.container.keyvalue.helpers.KeyValueContainerUtil:
> Attempt to get an uncached RocksDB handle failed and an instance was
> retrieved from the cache. This should only happen in tests
> 2021-01-20 16:36:40,006 WARN
> org.apache.hadoop.ozone.container.keyvalue.helpers.KeyValueContainerUtil:
> Attempt to get an uncached RocksDB handle failed and an instance was
> retrieved from the cache. This should only happen in tests
> 2021-01-20 16:36:40,013 WARN
> org.apache.hadoop.ozone.container.keyvalue.helpers.KeyValueContainerUtil:
> Attempt to get an uncached RocksDB handle failed and an instance was
> retrieved from the cache. This should only happen in tests
> 2021-01-20 16:36:40,018 WARN
> org.apache.hadoop.ozone.container.keyvalue.helpers.KeyValueContainerUtil:
> Attempt to get an uncached RocksDB handle failed and an instance was
> retrieved from the cache. This should only happen in tests
> {code}
> The name changing of the datanode column families done in HDDS-4369 is
> actually not a backward compatible.
> This PR aims to revert the name from deletedBlocks, deleteTxns, blockData to
> block_data, deleted_blocks, delete_txns.
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