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https://issues.apache.org/jira/browse/HBASE-12848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14278219#comment-14278219
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Ted Yu commented on HBASE-12848:
--------------------------------
When an invalid policy ('NON') is specified, we would get:
{code}
Caused by:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.HadoopIllegalArgumentException):
Cannot find a block policy with the name NON
at
org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.setStoragePolicy(FSDirAttrOp.java:184)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setStoragePolicy(FSNamesystem.java:1984)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setStoragePolicy(NameNodeRpcServer.java:664)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setStoragePolicy(ClientNamenodeProtocolServerSideTranslatorPB.java:1433)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:637)
{code}
> Utilize Flash storage for WAL
> -----------------------------
>
> Key: HBASE-12848
> URL: https://issues.apache.org/jira/browse/HBASE-12848
> Project: HBase
> Issue Type: Sub-task
> Reporter: Ted Yu
> Assignee: Ted Yu
> Fix For: 2.0.0, 1.1.0
>
> Attachments: 12848-v1.patch, 12848-v2.patch, 12848-v3.patch,
> 12848-v4.patch, 12848-v4.patch
>
>
> One way to improve data ingestion rate is to make use of Flash storage.
> HDFS is doing the heavy lifting - see HDFS-7228.
> We assume an environment where:
> 1. Some servers have a mix of flash, e.g. 2 flash drives and 4 traditional
> drives.
> 2. Some servers have all traditional storage.
> 3. RegionServers are deployed on both profiles within one HBase cluster.
> This JIRA allows WAL to be managed on flash in a mixed-profile environment.
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