Liu Shaohui created HBASE-15391:
-----------------------------------
Summary: Avoid too large "deleted from META" info log
Key: HBASE-15391
URL: https://issues.apache.org/jira/browse/HBASE-15391
Project: HBase
Issue Type: Improvement
Reporter: Liu Shaohui
Assignee: Liu Shaohui
Priority: Minor
Fix For: 2.0.0
When deleting a large table in HBase, there will be a large info log in HMaster.
{code}
2016-02-29,05:58:45,920 INFO org.apache.hadoop.hbase.catalog.MetaEditor:
Deleted [{ENCODED => 4b54572150941cd03f5addfdeab0a754, NAME =>
'YCSBTest,,1453186492932.4b54572150941cd03f5addfdeab0a754.', STARTKEY => '',
ENDKEY => 'user01'}, {ENCODED => 715e142bcd6a31d7842abf286ef8a5fe, NAME =>
'YCSBTest,user01,1453186492933.715e142bcd6a31d7842abf286ef8a5fe.', STARTKEY =>
'user01', ENDKEY => 'user02'}, {ENCODED => 5f9cef5714973f13baa63fba29a68d70,
NAME => 'YCSBTest,user02,1453186492933.5f9cef5714973f13baa63fba29a68d70.',
STARTKEY => 'user02', ENDKEY => 'user03'}, {ENCODED =>
86cf3fa4c0a6b911275512c1d4b78533, NAME => 'YCSBTest,user0...
{code}
The reason is that MetaTableAccessor will log all regions when deleting them
from meta. See, MetaTableAccessor.java#deleteRegions
{code}
public static void deleteRegions(Connection connection,
List<HRegionInfo> regionsInfo, long ts)
throws IOException {
List<Delete> deletes = new ArrayList<Delete>(regionsInfo.size());
for (HRegionInfo hri: regionsInfo) {
Delete e = new Delete(hri.getRegionName());
e.addFamily(getCatalogFamily(), ts);
deletes.add(e);
}
deleteFromMetaTable(connection, deletes);
LOG.info("Deleted " + regionsInfo);
}
{code}
Just change the info log to debug and add a info log about the number of
deleted regions. Others suggestions are welcomed~
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