Matteo Bertozzi created HBASE-7596:
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Summary: Redundant FSTableDescriptor update
Key: HBASE-7596
URL: https://issues.apache.org/jira/browse/HBASE-7596
Project: HBase
Issue Type: Bug
Components: master
Affects Versions: 0.94.4, 0.96.0
Reporter: Matteo Bertozzi
Assignee: Matteo Bertozzi
Priority: Trivial
The TableAddFamilyHandler and TableDeleteFamilyHandler code looks like
{code}
// Update table descriptor in HDFS
HTableDescriptor htd = this.masterServices.getMasterFileSystem()
.addColumn(tableName, familyDesc);
// Update in-memory descriptor cache
this.masterServices.getTableDescriptors().add(htd);
{code}
while the ModifyTableHandler code is just
{code}
// Update descriptor
this.masterServices.getTableDescriptors().add(this.htd);
{code}
The MasterFileSystem code looks like
{code}
HTableDescriptor htd = this.services.getTableDescriptors().get(tableName);
// ...add/remove columns to the descriptor...
this.services.getTableDescriptors().add(htd);
{code}
so, the service.getTableDescriptors().add() is called two times for the
add/delete family handler. (and the table descriptor rewritten twice
FSTableDescriptors.updateHTableDescriptor())
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