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Liu Shaohui commented on HBASE-15391: ------------------------------------- [~stack] [~Apache9] Please help to review this patch? Thanks~ > 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 > > Attachments: HBASE-15391-trunk-v1.diff > > > 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~ -- This message was sent by Atlassian JIRA (v6.3.4#6332)