HBASE-23604: Clarify AsyncRegistry usage in the code. (#957) #1099
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This patch implements a simple cache that all the masters can lookup to serve cluster ID to clients. Active HMaster is still responsible for creating it but all the masters will read it from fs to serve clients. RPCs exposing it will come in a separate patch as a part of HBASE-18095. Signed-off-by: Andrew Purtell <[email protected]> Signed-off-by: Wellington Chevreuil <[email protected]> Signed-off-by: Guangxu Cheng <[email protected]> (cherry picked from commit c2e01f2)
…ache#812) Currently we just track whether an active master exists. It helps to also track the address of the active master in all the masters to help serve the client RPC requests to know which master is active. Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: Andrew Purtell <[email protected]> (cherry picked from commit efebb84)
* HBASE-23281: Track meta region changes on masters This patch adds a simple cache that tracks the meta region replica locations. It keeps an eye on the region movements so that the cached locations are not stale. This information is used for servicing client RPCs for connections that use master based registry (HBASE-18095). The RPC end points will be added in a separate patch. Signed-off-by: Nick Dimiduk <[email protected]> (cherry picked from commit 8571d38)
* HBASE-23304: RPCs needed for client meta information lookup This patch implements the RPCs needed for the meta information lookup during connection init. New tests added to cover the RPC code paths. HBASE-23305 builds on this to implement the client side logic. Fixed a bunch of checkstyle nits around the places the patch touches. Signed-off-by: Andrew Purtell <[email protected]> (cherry picked from commit 4f8fbba)
* HBASE-23604: Cleanup AsyncRegistry interface - Cleans up the method names to make more sense and adds a little more javadocs for context. In future patches we can revisit the name of the actual class to make it more self explanatory. - Does AsyncRegistry -> ConnectionRegistry rename. "async" ness of the registry is kind of implicit based on the interface contents and need not be reflected in the name. Signed-off-by: Nick Dimiduk <[email protected]> Signed-off-by: stack <[email protected]> Signed-off-by: Viraj Jasani <[email protected]> (cherry picked from commit 12bb41e)
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Will be included in #1101 |
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Cleans up the method names to make more sense and adds a little
more javadocs for context. In future patches we can revisit
the name of the actual class to make it more self explanatory.
Does AsyncRegistry -> ConnectionRegistry rename.
"async" ness of the registry is kind of implicit based on
the interface contents and need not be reflected in the name.
Signed-off-by: Nick Dimiduk [email protected]
Signed-off-by: stack [email protected]
Signed-off-by: Viraj Jasani [email protected]