Bo Cui created HBASE-21651:
------------------------------
Summary: when splitting hlog，occurred exception
Key: HBASE-21651
URL: https://issues.apache.org/jira/browse/HBASE-21651
Project: HBase
Issue Type: Bug
Affects Versions: 2.1.0, 1.3.1
Reporter: Bo Cui
if hlog contains too many regions,when hlog splits, WALSplitter will open a
discovered.edits(FSDataOutputStream) for each region,
{code:title=WALSplitter.java|borderStyle=solid}
protected Map<byte[], SinkWriter> writers = Collections
.synchronizedMap(new TreeMap<byte[],
SinkWriter>(Bytes.BYTES_COMPARATOR));
{code}
but datanode has a limit (dfs.datanode.max.transfer.threads), which will cause
splithlog to be very slow,even failed.
solution:add an max openEdits value（a configuration）, when openEdits exceeds
this value, the oldest FSDataOutputStream will be closed
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
