Question on cluster restart and recovery

Elastic Stack Elasticsearch
1

Hi All,

I am now trying to fully understand the cluster recovery process after
encountered several times restart the cluster and the index data loss.

No question about the global and index meta data recovery. What confuse me
is 'how ES make use of local index shard information when cluster
recovery'.

From the source code, once meta recovery successfully an initializing
RoutingTable (all shard unassigned) is created, then AllocationService
will assign the shards to Live Nodes base on AllocationDecider. In my
mind, each data node is supposed to report the local index shard
information to MASTER node, master will rebalance dangling shard base on
such information. But after searched the code, no such procedure
happens.

Anyone can tell me how ES rebuild the routingTable during recovery phase?

Many Thanks.

Anson.

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2

No one echo? Repost it.

在 2013年7月3日星期三UTC+8下午4时57分00秒，exi...@gmail.com写道：

Hi All,

I am now trying to fully understand the cluster recovery process after
encountered several times restart the cluster and the index data loss.

No question about the global and index meta data recovery. What confuse
me is 'how ES make use of local index shard information when cluster
recovery'.

From the source code, once meta recovery successfully an initializing
RoutingTable (all shard unassigned) is created, then AllocationService
will assign the shards to Live Nodes base on AllocationDecider. In my
mind, each data node is supposed to report the local index shard
information to MASTER node, master will rebalance dangling shard base on
such information. But after searched the code, no such procedure
happens.

Anyone can tell me how ES rebuild the routingTable during recovery phase?

Many Thanks.

Anson.

--
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