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https://issues.apache.org/jira/browse/ASTERIXDB-1776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858778#comment-15858778
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Ian Maxon commented on ASTERIXDB-1776:
--------------------------------------
If you have more than one NC on a node you will have to configure the ports
appropriately such that they won't conflict. However this should be fixed now,
it was a simple bug (but not simple to find).
> Data loss in many multi-partitions
> ----------------------------------
>
> Key: ASTERIXDB-1776
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-1776
> Project: Apache AsterixDB
> Issue Type: Bug
> Components: Hyracks Core
> Environment: MAC/Linux
> Reporter: Wenhai
> Assignee: Ian Maxon
> Priority: Critical
> Attachments: cc.log, demo.xml, execute.log, tpch_node1.log,
> tpch_node2.log
>
>
> Total description: If we configure more than 24 partitions in each NC, we
> always loss almost half of the partitions, without any error information or
> logs.
> Schema:
> {noformat}
> drop dataverse tpch if exists;
> create dataverse tpch;
> use dataverse tpch;
> create type LineItemType as closed {
> l_orderkey: int32,
> l_partkey: int32,
> l_suppkey: int32,
> l_linenumber: int32,
> l_quantity: int32,
> l_extendedprice: double,
> l_discount: double,
> l_tax: double,
> l_returnflag: string,
> l_linestatus: string,
> l_shipdate: string,
> l_commitdate: string,
> l_receiptdate: string,
> l_shipinstruct: string,
> l_shipmode: string,
> l_comment: string
> }
> create dataset LineItem(LineItemType)
> primary key l_orderkey, l_linenumber;
> load dataset LineItem
> using localfs
> (("path"="127.0.0.1:///path-to-tpch-data/tpch0.001/lineitem.tbl"),("format"="delimited-text"),("delimiter"="|"));
> {noformat}
> Query:
> {noformat}
> use dataverse tpch;
> let $s := count(
> for $d in dataset LineItem
> return $d
> )
> return $s
> {noformat}
> Return:
> {noformat}
> 6005
> {noformat}
> Command:
> {noformat}
> managix stop -n tpch
> managix start -n tpch
> {noformat}
> Query:
> {noformat}
> use dataverse tpch;
> let $s := count(
> for $d in dataset LineItem
> return $d
> )
> return $s
> {noformat}
> Return:
> {noformat}
> 4521
> {noformat}
> We lose 1/3 records in this tiny test. When we increase the tpch scale onto
> 200gb across 196 partitions by the distribution of 8 X 24, we should get 1.2
> billion records, but it only returned 0.45 billion!
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