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Posted to dev@hbase.apache.org by "Mikhail Zvagelsky (JIRA)" <ji...@apache.org> on 2016/10/24 14:39:59 UTC
[jira] [Created] (HBASE-16935) Java API method
Admin.deleteColumn(table, columnFamily) doesn't delete family's StoreFile
from file system.
Mikhail Zvagelsky created HBASE-16935:
-----------------------------------------
Summary: Java API method Admin.deleteColumn(table, columnFamily) doesn't delete family's StoreFile from file system.
Key: HBASE-16935
URL: https://issues.apache.org/jira/browse/HBASE-16935
Project: HBase
Issue Type: Bug
Components: Admin
Affects Versions: 1.2.3
Reporter: Mikhail Zvagelsky
The method deleteColumn(TableName tableName, byte[] columnName) of the class org.apache.hadoop.hbase.client.Admin shoud delete specified column family from specified table. (Despite of its name the method removes the family, not a column - view the [issue| https://issues.apache.org/jira/browse/HBASE-1989].)
This method changes the table's schema, but it doesn't delete column family's Store File from a file system. To be precise - I run this code:
{code:|borderStyle=solid}
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;
public class ToHBaseIssueTracker {
public static void main(String[] args) throws IOException {
TableName tableName = TableName.valueOf("test_table");
HTableDescriptor desc = new HTableDescriptor(tableName);
desc.addFamily(new HColumnDescriptor("cf1"));
desc.addFamily(new HColumnDescriptor("cf2"));
Configuration conf = HBaseConfiguration.create();
Connection connection = ConnectionFactory.createConnection(conf);
Admin admin = connection.getAdmin();
admin.createTable(desc);
HTable table = new HTable(conf, "test_table");
for (int i = 0; i < 4; i++) {
Put put = new Put(Bytes.toBytes(i)); // Use i as row key.
put.addColumn(Bytes.toBytes("cf1"), Bytes.toBytes("a"), Bytes.toBytes("value"));
put.addColumn(Bytes.toBytes("cf2"), Bytes.toBytes("a"), Bytes.toBytes("value"));
table.put(put);
}
admin.deleteColumn(tableName, Bytes.toBytes("cf2"));
admin.majorCompact(tableName);
admin.close();
}
}
{code}
Then I see that the store file for the "cf2" family persists in file system.
I observe this effect in standalone hbase installation and in pseudo-distributed mode.
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